Tibetan kefir grains are a living culture that, with proper care, can be used for a long time, and can even continuously grow and multiply. Once you find a routine that suits your kefir grains and your environment, making kefir can easily become a simple, everyday habit. 🥛🌿

However, caring for kefir grains isn't just about pouring milk over them occasionally. The right amount of milk, fermentation time, temperature, the container and tools used are all important, as is how to store the culture when you don't want to make kefir for a few days or even longer periods.

In this guide, I will also introduce the method I use myself for daily kefir making. I'll show you how I measure the amount of milk based on the weight of the kefir grains, why I use a flatter food storage container, how I determine if the kefir is ready, how I store the culture in the fridge or, for longer breaks, in the freezer, and how I restart it after freezing.

It's important to note that part of the method presented here is based on my own practical experience. The activity and behavior of kefir grains can vary between cultures, depending on the milk and environmental conditions, so it's worth observing how your own kefir grains perform.

Why is it worth getting to know your own kefir grains?

Kefir grains are a living culture, so not every batch will turn out exactly the same. Temperature, the milk used, the amount and activity of the kefir grains, and the duration of fermentation can all affect the final result.

However, after a few weeks of regular kefir making, it will be easier to recognize how your own culture behaves.

💡 Good to know

Kefir grains are not a single-use ingredient. Under proper conditions, they can be reused again and again, and can grow over time. That's why it's worth paying attention not only to the finished kefir, but also to the kefir grains themselves: their condition, growth, and fermentation speed tell a lot about how they are feeling.

My daily kefir making routine – 24-hour cycle

🥛 The simplest way to keep Tibetan kefir grains working well long-term is to establish an easy-to-follow, regular routine.

I use my own kefir grains in a 24-hour cycle. Every day, I strain the ready-made kefir, prepare the next batch, and restart the fermentation with fresh milk.

1. I strain the finished kefir

After approximately 24 hours, I check the kefir. If I gently move the flatter container and the milk no longer flows freely but is uniformly thick and creamy, then for me it has reached the right consistency.

I strain the finished kefir, then place it in a clean container and put it in the refrigerator.

🧊 I find it tastier cold, so I usually wait until it cools down well before consuming it.

2. I prepare the kefir grains

After straining, I rinse the kefir grains with cold water, then drain them thoroughly.

Next, I weigh the total mass of the kefir grains.

3. I calculate the required amount of milk

I use a simple ratio for my own kefir grains:

I calculate nine times the weight of the kefir grains as milk.

For example, if:

I have 24 grams of kefir grains,
then 24 × 9 = 216 grams of milk.

Then I zero the scale and pour the calculated amount of milk directly onto the kefir grains.

This is a very simple method because I don't have to guess how much milk to use every time.

💡 Good to know

The 9× ratio is my own tried-and-tested method for making kefir. It is not necessary to use exactly the same ratio for every kefir culture. If your own kefir grains work well with a different amount of milk, it's worth adjusting your routine accordingly.

4. I cover it, but not airtight

I put the lid on the container, but do not seal it airtight.

Carbon dioxide can also be produced during fermentation, so it's important that the gases produced have a way to escape.

Then I place the container on the kitchen counter in a spot protected from direct sunlight.

And with that, the next 24-hour cycle can begin. 🌿

The next day, everything starts over: straining, preparing the kefir grains, weighing, measuring the milk, and starting another fermentation.

How much milk do kefir grains need? – The 9× method

🥛 One of the simplest methods for determining the right amount of milk is to start with the weight of the kefir grains.

In my daily kefir making, I use the 9× ratio: I multiply the weight of the drained kefir grains by nine, and add that many grams of milk.

A simple example

If the weight of the kefir grains is:

24 grams

then:

24 × 9 = 216 grams of milk

So, for 24 grams of kefir grains, I use approximately 216 grams of milk.

If the kefir grains grow over time, I adjust the amount of milk accordingly.

For example:

20 g kefir grains → 180 g milk
24 g kefir grains → 216 g milk
30 g kefir grains → 270 g milk
40 g kefir grains → 360 g milk
50 g kefir grains → 450 g milk

This way, as the kefir grains grow, the amount of kefir produced can be gradually increased.

Why do I like this method?

Because it's simple and reproducible.

You don't have to guess every day, "approximately this much milk will surely be fine." I simply weigh the kefir grains, do the multiplication, and I immediately know how much milk to add.

This is especially practical when the kefir grains are continuously growing, and you'll have a noticeably larger amount of culture in a few weeks.

💡 Good to know

The milk-to-kefir-grain ratio is not a universal recipe. The activity of different cultures can vary, and the speed of fermentation is influenced by temperature, milk composition, and other conditions. The 9× ratio should therefore be treated as your own tried-and-tested starting point, then fine-tuned based on the finished kefir.

What to do if it's ready too quickly?

If the kefir thickens much sooner than the usual 24 hours, becomes very sour, or whey quickly appears in it, this may indicate that fermentation is too intense under the given circumstances.

In this case, you can experiment with more milk or a shorter fermentation time.

However, if it's still too thin after 24 hours, it's worth examining the temperature, the activity of the kefir grains, and the type of milk used.

The goal is not to follow the same hourly schedule under all circumstances, but to find a balance where your kefir grains work well, and the taste and consistency of the finished kefir suit your preferences.

Why do I use a flat food storage container? – The secret to more homogeneous kefir

🫙 Many types of containers can be used for making kefir, but I use a flatter, wider food storage container. For me, there's a very practical reason for this: the milk layer is shallower, and the kefir grains can spread out more evenly within it.

What happens with a taller milk layer?

If you pour milk into a taller, narrower container, some of the kefir grains may eventually float to the top of the milk.

In this case, the kefir grains do not necessarily remain evenly distributed throughout the entire volume of milk.

Where there are more kefir grains, fermentation may be more intense, while in the middle part of the container – where there is less culture – the process may proceed more slowly.

As a result, one part of the milk may become thicker and sourer, while fermentation is less advanced elsewhere.

Why has the flat container worked for me?

In a flatter container, the milk layer is shallower, so the kefir grains are contained within a much smaller "milk layer."

In my experience, this results in more even, homogeneous kefir.

You don't need any special tools: a suitably sized, clean, food-grade flatter container is sufficient.

💡 Good to know

Using a flat container is my own tried-and-tested method. It doesn't mean that good kefir cannot be made in a taller jar. Many kefir makers use traditional jars and achieve good results. I chose the flatter container because, with my own kefir grains, I experience more even fermentation and more homogeneous kefir this way.

A small trick at the end

As the 24 hours approach, the closed, but not airtight, container can be gently moved.

If the milk no longer flows freely but rather moves as a continuous, thicker mass, that's a sign for me that the kefir is ready.

However, if it's still liquid and "sloshing," I usually give it a little more time.

This is a simple, everyday method that doesn't require any special measuring tools – just a little experience. 😊

What Milk Do I Use, and Why?

🥛 Milk is the most important "food" for Tibetan kefir grains, so choosing the right milk is crucial. For daily kefir making, I use 2.8% pasteurized cow's milk.

This is primarily for practical reasons: it's easy to get, can be stored in the fridge, and doesn't require any special preparation steps.

Why Don't I Regularly Use Raw Milk?

When using raw milk, special heat treatment might be necessary due to microbiological safety concerns. In this case, the milk needs to be boiled or properly heat-treated, then cooled back down to a suitable temperature for the Tibetan kefir grains.

I don't need to do this, so I simply take pasteurized milk from the fridge and use it to prepare the next batch of kefir.

During fermentation, the milk gradually warms up to room temperature anyway.

2.8% Milk Works Well for Me

I can make kefir with a pleasant texture and taste from 2.8% milk, which is why I use it regularly.

Of course, this doesn't mean that good kefir can only be made from this type of milk. Milks with different fat contents can result in kefir with varying textures and tastes, so it's worth experimenting based on your own experience.

🐐 What About Goat's Milk?

Goat's milk can also be suitable for making kefir, and its composition differs from cow's milk. Research suggests that different types of milk can affect both the microbial community of the kefir grains and the properties of the finished kefir.

I consider goat's milk to be an exceptionally good ingredient if someone has access to high-quality, properly handled goat's milk.

🥛 And UHT Milk?

If there's no other option, you can also make kefir from UHT milk.

However, I tend to view this as an emergency or occasional solution. In my experience, the taste and texture of kefir made from UHT milk are not as good as those made from regularly used pasteurized milk.

This is partly because UHT treatment heats the milk to a very high temperature, which alters some of its components. This doesn't mean UHT milk is "bad"; it simply behaves differently as an ingredient during kefir making.

💡 Good to know

You don't necessarily have to choose the most expensive or special milk for making kefir. The most important thing is to use milk of reliable quality, that has been properly processed, and that you can regularly access. If you find a milk that your Tibetan kefir grains thrive on, and from which you like the finished kefir the most, it's worth sticking with it.

And What About A1 and A2 Milk?

The beta-casein in cow's milk can exist in several genetic variants, with A1 and A2 being the best known. The proportion of these can vary in different milk breeds.

However, the topic is often oversimplified online. It's not accurate to generally state that a particular milk is "easier to digest" for everyone, so it's better to treat this as an individual dietary matter.

If you are specifically interested in A2 milk, it's worth checking the exact origin and labeling of the milk.

Where and How to Ferment Your Kefir? – Temperature, Light, and Covering

🌡️ For Tibetan kefir grains, the fermentation conditions are at least as important as the milk itself. Temperature, light, and covering the container can all influence how quickly your kefir is made.

I ferment my own Tibetan kefir grains at room temperature, on the kitchen counter, in a place protected from direct sunlight.

🌡️ Why at Room Temperature?

Traditional milk kefir preparation typically takes place at room temperature. At this temperature, the microorganisms in the Tibetan kefir grains actively ferment the milk.

A too cold environment can slow down the process, while a warmer environment can speed it up. This is why in summer, the same amount of kefir grains might make kefir in a shorter time than in winter.

Therefore, 24 hours is a proven starting point for me, not a mandatory duration under all circumstances.

☀️ Don't Place It in Direct Sunlight!

I always place the fermentation container in a place protected from light.

There's no need for the Tibetan kefir grains to be exposed to direct sunlight, so a shadier part of the kitchen counter can be suitable.

🫙 How to Cover It?

During fermentation, gases, including carbon dioxide, can form, so it's not advisable to seal the container completely airtight.

I place the lid of my flat food container on top, but I don't close it tightly.

This protects the container from dust and other contaminants while preventing a completely sealed system from forming.

🕐 How Long Should It Take?

Traditional milk kefir fermentation often takes approximately 18–24 hours at room temperature, but the actual time depends on several factors.

For me, the 24-hour cycle works well, and I also consider the condition of the kefir.

If I gently move the flat container and the milk no longer flows freely but moves as a continuous, thicker kefir, then I generally consider it done.

However, if during fermentation, the whey is visibly separating, it may indicate that the process is more advanced.

💡 Good to know

The speed of fermentation is not always the same. If the kitchen is warmer, the kefir may be ready faster; in a cooler environment, it may take more time. Therefore, it's worth observing the texture and changes of the kefir, not just watching the clock.

⚠️ An Important Safety Rule

The fermentation container should always be kept clean, and you should only consume the finished kefir if its appearance, smell, and texture are appropriate.

If you notice mold, unusual discoloration, or an unpleasant smell indicating spoilage, do not consume the kefir, and do not automatically continue to use the culture.

Fermentation is a natural process, but it's still important to follow basic food hygiene rules.

What happens to Tibetan kefir grains in 24 hours?

🦠 When you place Tibetan kefir grains into fresh milk, a natural fermentation process begins. Kefir grains are not a single microorganism, but a complex community of bacteria and yeasts that together transform milk into kefir.

During this process, the original properties of the milk gradually change: it becomes thicker, develops a sourer taste, and acquires the characteristic aroma typical of kefir.

🦠 The microorganisms in kefir grains get to work

Tibetan kefir grains contain various lactic acid bacteria, yeasts, and other microorganisms living together. Once in the milk, these microorganisms utilize some of the milk's nutrients while producing various fermentation byproducts.

One important result of this process is the formation of lactic acid, which contributes to kefir's tart taste and also causes the milk proteins to change.

Additionally, yeasts can produce carbon dioxide and small amounts of alcohol. The quantity of these depends on the kefir culture and the fermentation conditions.

🥛 The milk gradually thickens

As fermentation progresses, the milk becomes less liquid and increasingly adopts the creamy consistency characteristic of kefir.

This is one of the easiest visual signs that your Tibetan kefir grains are actively working.

By the end of the process, the kefir will have a much more pronounced sour taste and the distinctive aroma of fermented milk.

🧪 What happens to milk sugar (lactose)?

The microorganisms in Tibetan kefir grains also utilize the lactose found in milk. Some of this lactose is converted into fermentation byproducts.

However, it's important to note that fermentation does not automatically remove all the lactose from the milk. Some lactose usually remains in the kefir, so it cannot be generally stated that it is problem-free for everyone with lactose intolerance.

🫧 Why might gas be produced?

During the activity of yeasts and certain bacteria, carbon dioxide can also be produced.

This is why it's important not to seal the fermentation vessel completely airtight.

Due to this, you might sometimes observe a slight fizz or tiny bubbles in the kefir.

⏰ What happens if you leave it too long?

If the Tibetan kefir grains ferment the milk for longer than necessary, the kefir can become increasingly sour, and whey may start to separate.

Whey is typically a clear, slightly yellowish liquid that contains some of the water content and dissolved solids from the kefir.

If only a small amount of whey appears, it's not necessarily a problem. It rather indicates that the fermentation has reached a more advanced stage.

💡 Good to know

Kefir production does not happen in a single moment. Fermentation is a gradual process: the milk slowly thickens, sours, and then, after a longer period, whey can separate more noticeably. Therefore, it's worth learning to recognize the state in which you find the kefir most delicious.

🌿 The kefir grains themselves may grow

While the Tibetan kefir grains ferment the milk, the culture itself can also grow under proper conditions.

This is why you might find that after a few weeks or months of regular kefir making, you have more kefir grains than you started with.

This growth is a natural part of caring for a living culture – and it also means that over time, you can make more kefir, or even share your excess kefir grains with others.

The growth and reproduction of Tibetan kefir grains

🦠 One of the special characteristics of Tibetan milk kefir grains is that, under appropriate conditions, they do not get used up but can continuously grow and reproduce.

If you regularly ferment them in fresh milk, you may eventually notice that the mass of the culture increases. This is a natural part of how a living kefir culture functions.

📈 How fast can they grow?

The rate of growth is not uniform for all kefir grains. It can depend on factors such as the condition of the culture, the milk used, the fermentation conditions, and the temperature.

In my own kefir grains, I find that a 24-gram batch can grow by approximately 2–3 grams per day under suitable conditions.

Of course, this is not a guaranteed growth rate but an observation from my own culture.

⚖️ Why is it worth weighing them occasionally?

If you regularly weigh your Tibetan kefir grains, you can clearly see how your culture is changing.

I weigh the drained kefir grains before each new fermentation. This is also practical because, with the 9x milk dosing method I previously described, I can always calculate the amount of milk needed for that particular batch.

For example, if the kefir grains grow from 24 grams to 30 grams over time, then for the next batch:

30 × 9 = 270 grams of milk

will be needed, based on the ratio I use.

🥛 What happens if you have too much?

After a while, you might find that you have more Tibetan kefir grains than you need for your own kefir making.

In such cases, you don't necessarily have to keep increasing the amount of milk. There are several ways to utilize the excess culture.

💚 You can give them to family members or friends who want to make their own kefir.

🥛 You can increase the amount of kefir you make if you need a larger batch.

❄️ You can properly store them for later, if you want to have a backup culture.

🌱 Is growth a good sign?

The growth of Tibetan kefir grains generally indicates that the culture is active and in good conditions.

Of course, growth alone does not prove that all conditions are perfect, so it is still worth paying attention to the appearance, smell, and properties of the finished kefir.

💡 Good to know

Tibetan kefir grains do not necessarily grow as a single large, continuous "mushroom." The culture can consist of smaller or larger grains or lobes, which may separate over time or combine with new parts. Therefore, changes in size and shape alone do not indicate a problem.

🧑‍🍳 Excess kefir grains mean new opportunities

If you make kefir regularly, you might eventually find yourself with more Tibetan kefir grains than you need.

I consider this an opportunity rather than a problem.

With a little excess kefir grains, others can also start their own homemade kefir journey. This way, a single living culture can continue to thrive in multiple households over time.

This is one of the interesting properties of Tibetan kefir grains: they are not simply an ingredient you use, but a living culture that can be nurtured and propagated. 🌿

Do You Need to Wash Your Tibetan Kefir Grains?

🧼 You can find differing opinions on cleaning kefir grains. Some rinse them after every fermentation, while others believe it's unnecessary and simply place them in fresh milk after straining.

I personally rinse my kefir grains with cold water after every 24-hour fermentation, then drain them thoroughly and weigh them.

🚿 How I Rinse My Kefir Grains

After straining the finished kefir, I gently rinse the kefir grains with cold water.

I don't rub or squeeze them, just rinse them thoroughly, then let the excess water drain off.

Afterward, I weigh the kefir grains and calculate the amount of milk for the next batch based on that weight.

For me, this is part of my daily routine, and it also allows me to accurately track how the culture is growing.

Why I Use Cold Water

I use cold water to rinse the kefir grains. I do not use hot or very warm water because kefir grains consist of living microorganisms, and I don't want to expose them to heat.

That's why I always let the culture drain well after rinsing before returning it to fresh milk.

🥄 What Tools Should You Use?

For contact with kefir grains, I use plastic or wooden tools.

My strainer and all other tools that come into contact with the kefir grains are made of these materials.

💡 Good to know

You often hear the statement that "kefir grains must not come into contact with metal at all." However, sources on this topic are not entirely consistent. It is definitely advisable to avoid prolonged contact with reactive or rusting metals. I simply choose plastic and wooden tools, so I don't have to worry about it.

The most important thing in all cases is that the tools are clean and food-safe.

Do You Need to Rinse Them Every Time?

There isn't one universal answer to this.

Some kefir makers rinse their kefir grains after every fermentation, while others don't wash them at all, just strain them and place them in fresh milk.

I use the former method, and the daily cold water rinse works well for me.

If you choose a different method, that doesn't automatically mean you're making kefir incorrectly. It's worth observing how your own culture works and developing the most comfortable routine for you.

⚠️ What to Always Pay Attention To

Using clean tools is much more important than exactly which rinsing method you choose.

Regularly and thoroughly clean the jar or food container, the strainer, and all other tools used, and make sure no detergent residue remains on them.

Kefir grains are a living culture, so hygiene is one of the most important parts of regular kefir making.

What Happens If You Don't Make Kefir for a Few Days?

✈️ You don't have to make kefir every day to maintain your Tibetan kefir grains. If you're traveling for a few days or simply want to take a break, you can rest the culture under appropriate conditions.

The simplest solution in such cases is the refrigerator.

❄️ Shorter Break: Storing in Milk in the Fridge

If you only want to stop making kefir for a few days, place the kefir grains in fresh milk, then put them in the refrigerator.

Cold significantly slows down fermentation, so the kefir grains work much slower than at room temperature.

In my own practice, I keep the kefir grains in the fridge like this for about 5 days.

When I want to make kefir again, I take them out of the fridge, pour off the storage milk, and then prepare the kefir grains as usual for the next fermentation.

🥛 What Happens in the Fridge?

In the refrigerator, the kefir grains do not stop completely, their activity just slows down significantly.

Therefore, it's not advisable to "forget" about kefir grains stored in the fridge for a long time.

However, if you're only taking a short break of a few days, this can be a simple and practical solution.

💡 Good to know

The storage time in the fridge may not be the same for all kefir grains. The condition of the culture, the milk, and the refrigerator temperature can all play a role. The approximately 5 days mentioned here is my own proven practical method.

🧳 What if You're Traveling for a Longer Period?

If you don't want to deal with kefir grains for several weeks or even longer, storing them in the refrigerator may no longer be the most convenient solution.

In such cases, freezing may be an option, provided you prepare the culture properly.

However, this should be treated separately, as after freezing, the kefir grains may need several fermentation cycles to regain their previous activity.

In the next section, I will show you how I store kefir grains for longer breaks and how I reactivate them after freezing.

Longer Break – How to Freeze Your Kefir Grains

❄️ If you don't want to make kefir for several weeks or even longer, freezing Tibetan kefir grains is a possible storage method.

However, it's important to note that freezing temporarily inactivates the microbial community of the kefir grains, and after thawing, they may need time to regain full activity.

Here's how I typically store my own kefir grains during longer breaks.

1. Rinse Thoroughly

First, I thoroughly rinse the kefir grains with cold water to remove any residual milk.

2. Let Them Drain Well

Then, I let as much water as possible drain off them.

The goal is to ensure no excess liquid remains on them before freezing.

3. Measure the Quantity

I weigh the drained kefir grains and record their weight.

This is practical because later I will know exactly how much I took out of the freezer.

4. Package Them

I place the kefir grains in plastic wrap or a clean, food-safe bag, then seal it.

It's advisable to package them with as little air around them as possible.

5. Into the Freezer They Go

Afterward, I place the packaged kefir grains in the freezer.

I primarily use this for longer breaks when I anticipate not making kefir for several weeks.

💡 Good to know

Freezing does not result in the same rapid reactivation for all kefir cultures. The microbial composition of different kefir grains can vary, so the regeneration time after thawing may also change.

Therefore, freezing should be treated more as a long-term storage option rather than part of daily kefir grain care.

❄️ Why Record the Weight Before Freezing?

If, for example, you stored 30 grams of kefir grains, you can easily identify which batch it was later.

If you store several separate batches of kefir grains, you can even write on the packaging:

"Tibetan Kefir Grains – 30 g – August 2026"

This way, you'll always know exactly what you stored.

However, before using frozen kefir grains, there's another important step: you need to gradually return them to normal fermentation.

How to Revive Frozen Kefir Grains?

❄️➡️🥛 Kefir grains removed from the freezer may not immediately perform the same way they did before freezing. After being exposed to cold, they might need time to fully regain their milk-fermenting activity.

I gradually reactivate my own kefir grains, and I don't expect the first one or two batches to produce the same quality kefir as my regularly used culture.

1. Thaw in Lukewarm Water

First, I let the frozen kefir grains thaw in lukewarm water.

I don't use hot water because kefir grains contain live microorganisms, which I don't want to expose to high temperatures.

Once they are completely thawed, I pour off the water.

2. Rinse with Cold Water

I then rinse the thawed kefir grains with cold water and let them drain thoroughly.

Afterward, I weigh them the same way I do for everyday kefir preparation.

3. Place into Fresh Milk Again

Based on the measured kefir grains, I calculate the required amount of milk and then place them into fresh milk.

I start the fermentation process just as I would during my usual daily routine.

🥛 The First Batches May Be Different

After freezing, the first one or two batches of kefir may not be as delicious or have the same consistency as before.

This doesn't necessarily mean there's a problem with the kefir grains. The culture may need time to regain proper activity.

At this point, I don't give up; instead, I continue with the usual 24-hour cycles.

In my experience, after the first one or two filtrations, the kefir grains gradually "recover" and start producing the kind of kefir I'm accustomed to.

💡 Good to know

Don't judge the condition of your kefir grains based on the first batch after freezing. The speed of reactivation can vary by culture. Give it a few fermentation cycles, and in the meantime, observe its consistency, smell, taste, and how quickly the milk thickens.

When Should You Be Cautious?

If, after reactivating your kefir grains, you don't experience proper fermentation over several cycles, or if the appearance of the culture noticeably changes, it's worth stopping and checking if the conditions are appropriate.

If mold, unusual discoloration, or an unpleasant smell indicating spoilage appears, do not consume the prepared kefir, and do not automatically continue using the culture.

The goal is for the kefir grains to gradually return to their usual activity – not to achieve perfect results after a single fermentation.

How Do You Know If Your Kefir Grains Are Healthy?

🦠 Tibetan kefir grains are a living culture, so it's natural for their consistency, size, and activity to change over time. The most important thing is to get to know the "normal" functioning of your own kefir grains.

🌱 Growth Can Be a Good Sign

Under proper conditions, kefir grains can gradually grow. If you notice that the mass of your culture increases over weeks, it may indicate that it is actively working.

This is why I regularly weigh my kefir grains: it allows me not only to precisely determine the amount of milk but also to observe how the culture changes.

🥛 Kefir Is Consistently Produced

One of the best practical indicators is that, under appropriate conditions, the kefir grains consistently ferment milk.

If the usual amount of milk gradually thickens under normal circumstances and develops the characteristic kefir smell and taste, then the culture is actively working.

👃 Get to Know Its Usual Scent!

Kefir grains and the finished kefir can have a distinctive, sour, fermented milk-like smell.

If you regularly make kefir, you'll quickly learn what smell and taste your own culture produces.

Therefore, an unusual, strongly unpleasant, or spoilage-like smell can be a warning sign.

🎨 Watch for Unusual Discoloration

The natural color and appearance of kefir grains can vary, but if you see noticeable, unusual discoloration or mold, do not simply try to wash it off and continue using it.

In such cases, the safer solution is not to consume the associated kefir and not to automatically continue using the culture.

⚠️ When Is It Better to Discard Them?

If mold appears or the culture shows clear signs of spoilage, it's not worth taking the risk.

The same applies if the finished kefir has an unusual, unpleasant smell or appearance.

💡 Good to know

Not every change indicates a problem. Kefir grain particles can be smaller or larger, they can clump together, separate, and their consistency can also change. The most important thing is to observe changes relative to the usual state of your own culture.

🧼 Cleanliness Is Key

One of the most important aspects of caring for kefir grains is proper hygiene.

Use a clean jar, a clean strainer, and clean utensils. Regularly wash the fermentation jar and make sure no dish soap residue remains.

With proper care, live kefir culture can be used for a long time, but food safety must always be prioritized.

Common Problems When Caring for Kefir Grains

🥛 When making kefir, the finished product may behave differently from one day to the next. It might be thicker, thinner, more sour, or simply take longer to prepare than before.

This doesn't necessarily mean there's a problem with the kefir grains. Many factors influence fermentation, so it's worth investigating the cause of the change first.

😖 Why Did the Kefir Become Too Sour?

There can be several reasons for overly sour kefir.

One of the simplest possibilities is that it fermented for too long. If the kefir grains work in the milk longer than necessary, the kefir can become progressively sourer, and over time, whey may also begin to separate.

However, it's also worth considering what kind of milk the fermentation started with. If the milk was not entirely fresh to begin with, it can affect the taste of the finished kefir.

If the kefir otherwise has an appropriate smell and consistency, but only became too sour, you can try a shorter fermentation next time.

💧 Why Is It Too Thin?

If the kefir is still very liquid after 24 hours, there can be several reasons.

For example, it's possible that:

the ambient temperature was cooler,
the kefir grains are currently less active,
too few kefir grains were added to the milk,
the type of milk used changed,
or the culture needs a few more cycles to activate after freezing.

It's worth changing only one thing at a time, making it easier to observe what improves the result.

🫧 Why Did Whey Appear in the Kefir?

The appearance of whey usually indicates that the fermentation is more advanced.

Whey can appear as a translucent or slightly yellowish, watery liquid and may have a sour taste.

If only a small amount appears, it's not necessarily a problem in itself.

In my experience, if whey is clearly visible in kefir prepared in a flat container, it probably means the kefir is a bit over-fermented. In this case, it might still be edible, but its taste will be more sour.

🕐 Why Did It Finish Earlier or Later?

The speed of fermentation is primarily determined by the conditions.

If the kitchen is warmer, the kefir grains can work faster. In colder weather, fermentation might be slower.

Therefore, a 24-hour cycle can be a good starting point, but you don't have to stick to it at all costs.

🥛 Why Did the Taste Change When I Used Different Milk?

The composition of the milk affects the final result of the kefir.

Fat content, protein content, and many other properties can differ, so it's completely natural for kefir made from a different milk to have a different taste or consistency.

If you find a type of milk that produces the best kefir according to your kefir grains and your taste, it's worth sticking with it.

🦠 Why Aren't My Kefir Grains Growing?

Kefir grain growth is not always uniform. They might grow faster at times and hardly change in mass at others.

If the milk ferments regularly, the kefir is prepared properly, and the culture's appearance is also fine, slower growth alone doesn't necessarily indicate a problem.

💡 Good to know

With kefir making, often not just one factor causes a change. For example, if your kefir became sourer overnight, think through everything: did the milk, temperature, amount of kefir grains, fermentation time, or container change? This makes it much easier to find the cause.

🚨 When Should You NOT Try to "Save" Them?

If the kefir or kefir grains are moldy, noticeably discolored, or have a smell that clearly indicates spoilage, do not simply try to wash them off or place them in new milk.

In such cases, food safety is more important than saving the culture.

Kefir grains are a valuable live culture, but it's not worth risking with a suspicious or spoiled culture.

Frequently Asked Questions About Caring for Your Tibetan Kefir Grains

When newcomers start caring for their Tibetan kefir grains, the same questions often arise. We've gathered the most important ones to make daily kefir making easier for you.

How long can the same batch of kefir grains be used?

With proper care, Tibetan kefir grains can be used for a long time, and you don't need to buy a new culture after every batch.

Under suitable conditions, kefir grains can even grow and multiply, so over time, you might have several times the initial amount at your disposal.

Do I need to make kefir every day?

Not necessarily.

If you consume kefir regularly, a 24-hour cycle can be convenient, but if you take a few days off, the kefir grains can be rested in the refrigerator.

For longer breaks, a different storage method may be necessary.

Can kefir grains be stored in the refrigerator?

Yes. For shorter breaks, kefir grains can be rested in milk in the refrigerator.

The cold significantly slows down fermentation, so the culture's activity will also be much lower.

Can kefir grains be frozen?

For longer breaks, freezing can be an option. However, it's worth noting that after thawing, the kefir grains may need a few fermentation cycles to regain their previous activity.

Freezing and re-activating methods can vary between cultures.

Why did my kefir suddenly become much more sour?

The most common reasons are prolonged fermentation or changed conditions.

In warmer weather, for example, kefir might be ready faster, so the same 24-hour period might become too long.

It's also worth checking if the milk used was truly fresh.

Is it a problem if whey appears in the kefir?

Not necessarily.

A small amount of whey appearing can be a natural part of fermentation. However, if a larger quantity of whey separates, it usually indicates that fermentation is very advanced.

The kefir might be sourer in this case, but the appearance of whey alone doesn't mean the kefir has gone bad.

Why aren't my kefir grains multiplying?

The growth rate of kefir grains is not constant. It can be influenced by the milk, temperature, fermentation conditions, and the culture itself.

If the kefir ferments properly, the culture looks healthy, and there are no signs of spoilage, slower growth alone isn't necessarily a problem.

What tool should I use to strain my kefir grains?

I use a plastic strainer, and I prefer plastic or wood for any tools that come into contact with the kefir grains.

The most important thing is that the tool is clean and food-safe.

Can I use UHT milk?

Yes, if there's no other option, you can make kefir from UHT milk.

However, I prefer to use pasteurized milk, as my own experience shows it results in better-tasting and textured kefir.

What type of milk should I choose?

To start, good quality pasteurized cow's milk can be a suitable choice. Kefir can also be made with goat's milk, and different types of milk can result in different tastes and textures.

It's worth choosing good quality milk from a reliable source and healthy, active kefir culture.

Does it matter where the kefir grains come from?

Yes, the quality of the starter culture can be important.

A healthy, active, properly cared-for batch of kefir grains can provide a good foundation for regular kefir making. However, if the culture was poorly stored or improperly cared for, it might activate slower, ferment weaker, or simply disappoint a beginner.

Therefore, it's worth choosing carefully cultivated kefir grains from a reliable source, especially if you're just starting to make kefir at home.

💡 Good to know

The outcome of kefir making is not only determined by the recipe. The quality of the starter culture, the milk, the temperature, the container, the fermentation time, and the method of care all contribute to the final result. If any of these are not optimal, a beginner might easily think they "can't make kefir," when in reality, the problem lies with the starter culture or the conditions.

What Research Says About Caring for Kefir Grains?

🔬 Caring for Tibetan kefir grains isn't just a matter of practical experience: researchers have long been studying the microbiological composition of kefir grains and the fermentation process.

Kefir grains are actually a complex, living microbial community. Lactic acid bacteria, acetic acid bacteria, and yeasts live together in a matrix of proteins and polysaccharides. This unique collaboration allows the grains to transform milk into kefir.

🦠 Not all kefir grains are exactly alike

Research suggests that the microbial composition of kefir grains from different origins can vary. The type of milk, fermentation conditions, and the culture itself can influence which microorganisms are present and what substances are produced during fermentation.

This can also explain why two different batches of kefir grains, even with the same milk and similar conditions, don't necessarily produce identical kefir.

🥛 The milk matters too

For example, a study published in 2025 investigated how different milk raw materials affect the structure, microbial community, and substances produced during fermentation of kefir grains. The study compared cow's milk, goat's milk, and other milk-based substrates.

The results showed that the raw material used can influence the development of kefir grains and the microbial processes.

This is a good reason why, if you've found a type of milk that works well with your kefir grains and from which you enjoy the kefir the most, it's worth sticking with it.

🌿 Why is the fermentation method important?

Recent research increasingly shows that it's not just the kefir grains themselves that matter, but also how the fermentation takes place.

In a study published in 2026, several batches of kefir grains from different origins and various fermentation methods were compared. Researchers found that the fermentation method can significantly impact the microbial composition and certain properties of the finished kefir.

This aligns well with what you might experience yourself when making kefir at home: the amount of milk, temperature, time, container, and quantity of kefir grains all shape the final result.

🧪 And what do we know about the potential health effects of kefir?

More and more scientific research is being published about kefir. Among other things, its relationship with the gut microbiome, the bioactive substances produced during fermentation, and various physiological effects are being investigated.

However, it's important to distinguish between laboratory, animal, and human studies.

A review published in 2026 summarized the results of 28 human clinical trials. According to the authors, there are promising results in several areas related to kefir consumption, but there are significant differences between studies in terms of kefir composition, dosage, study duration, and participants. Consequently, the accumulated evidence is currently still limited.

Therefore, kefir should be treated as a valuable, fermented food, not as a medicine or a remedy for diseases.

💡 Good to know

One interesting scientific finding is that kefir grains are not simply "a fungus," but a complex microbial ecosystem. The cooperation of bacteria and yeasts, the composition of the milk, and the fermentation conditions all influence what kind of kefir is produced.

That's why it's completely natural for two different batches of kefir grains or kefir made from two different types of milk to have slightly different tastes, textures, or fermentation speeds.

Why the Quality of Your Kefir Grains Matters When You Start

🌿 When someone first wants to make kefir at home, it's natural to focus primarily on the milk, the container, and the preparation method. Yet, it can be at least as important what kind of kefir grains you start with.

Kefir grains are a living microbial culture, so not every starter culture behaves exactly the same way. The microbial composition of different kefir grains can vary, and this can affect the speed of fermentation and certain properties of the finished kefir.

🦠 An Active Culture is a Good Starting Point

If you start with healthy, active Tibetan kefir grains, under proper conditions, you can regularly ferment milk with them, and over time, the culture itself may even grow.

In contrast, with a poorly stored, weakened, or improperly cared-for culture, the kefir grains might activate slower, take longer to make the kefir, or the results of the first batches may fall short of your expectations.

This can be particularly misleading for beginners.

Someone might think:

"I must be doing something wrong."

However, it's possible that they simply started with a culture that wasn't in optimal condition.

👀 What to Look for When Buying?

It's worth choosing kefir grains from a source where the culture is regularly cared for, kept under appropriate conditions, and clear information about its origin and use is provided to the customer.

A good starter culture is usually not a "secret recipe," but rather a properly maintained, active living culture.

If the kefir grains appear unusually stringy, have an odd texture, an unpleasant smell, mold, or other signs of spoilage, it's not worth risking.

🥛 However, Good Kefir Grains Alone Aren't Everything

It's also important to know that even excellent quality kefir grains don't guarantee that every batch will be perfect from day one.

Many factors influence the final outcome:

what kind of milk you use,
how many kefir grains you add to the milk,
at what temperature you ferment,
how long you let it mature,
what kind of container you use,
and how you care for the culture.

The kefir grains and their environment together form the system from which the kefir is ultimately produced.

💡 Good to know

The microbial composition of kefir grains can naturally vary, so two cultures from different sources won't necessarily produce completely identical kefir even with the same milk. Getting to know your own culture is therefore at least as important as choosing the right starter kefir grains.

🌱 A Good Start Makes a Big Difference

If you're looking to dive into homemade kefir production now, it's worth choosing kefir grains that are carefully nurtured and properly handled.

This way, right from the first step, you create the opportunity to start working with an active culture that you can then further care for and multiply based on your own experience.

When to Take a Break from Making Kefir?

🌿 Making kefir can easily become part of your daily routine, but of course, there might be times when you don't want to deal with it for a few days or even longer.

You don't have to part with your kefir grains for a short break. With proper storage, the culture can be rested and then reused later.

🧊 A Few Days' Break

If you only want to take a break for a few days, you can place your kefir grains in fresh milk in the refrigerator.

The cold significantly slows down fermentation, so the kefir grains work much less actively.

In such cases, I usually rest the culture in the fridge for approximately 5 days.

When I want to make kefir again, I take it out of the fridge, pour off the storage milk, then rinse the kefir grains, drain them, and place them back in fresh milk.

❄️ Several Weeks' Break

If you know in advance that you won't be making kefir for several weeks, longer-term storage of the kefir grains may require a different solution.

In this case, freezing may be an option, which I detailed in the previous section.

After thawing, a frozen culture may need time to reactivate, so it's worth accounting for a few initial fermentation cycles.

✈️ Plan Ahead Before Traveling

If you're going away, it's worth deciding what to do with your kefir grains before the last minute.

First, consider:

How long will you be away?

If only for a few days → resting them in the refrigerator might be practical.
If for several weeks → it's worth choosing a longer-term storage solution.
If you're unsure → it's better to prepare by having a backup culture.

💡 Good to know

Kefir grains are a living culture, so resting and restarting may not be the same in every case. If you restart after a long break, don't be surprised if the first few batches are still different from what you're used to. The culture may need time to return to its previous activity.

🌱 The Most Important Thing: Don't Stress About It

Caring for kefir grains doesn't have to be complicated.

If you establish a simple routine and learn to recognize the characteristic behavior of your own culture, then an occasional missed day or even a longer break doesn't mean you have to start all over.

The key is cleanliness, proper storage, and giving the culture time to adapt when restarting.

When Is Kefir Ready? – How to Recognize the Right Consistency

🥛 One of the most important parts of making kefir is recognizing when the kefir has reached the state where it's worth straining.

You don't necessarily have to constantly watch the clock. The texture, appearance, and smell of the kefir are at least as important.

I usually make kefir with 24 hours of fermentation, but I always make the final decision based on its condition.

👀 The Simplest Test: Gently Move It!

The great advantage of a shallow food container is that it's easy to observe the consistency of the kefir in it.

After about 24 hours, I gently move the container.

If the milk no longer flows freely from one side to the other, but instead moves in a uniformly thick, creamy consistency, then for me, the kefir is usually ready.

At this point, I strain the kefir grains, and place the finished kefir in the refrigerator.

🥛 What Happens If You Leave It Longer?

If you leave the kefir grains in the milk, fermentation continues.

The kefir can become increasingly sour and thicker, and later, whey may appear in it.

Whey is a translucent, watery, slightly yellowish liquid that can separate from the kefir.

If only a little whey is visible, it's not necessarily a problem. Rather, it indicates that fermentation is already in a more advanced state.

😋 What If It's a Little Over-Fermented?

If the kefir otherwise has an appropriate smell and appearance, but has fermented longer than necessary, it will generally be sourer in taste.

I don't automatically consider this a problem. It simply has a different taste and consistency than the kefir I strained at my ideal time.

However, with the next batch, it might be worth trying to strain a little earlier.

🌡️ 24 Hours Is Not Set in Stone

The 24-hour fermentation is a routine that works well for me, but it doesn't mean that exactly the same amount of time is needed in every kitchen, every season, and with every type of kefir grains.

In a warmer environment, the kefir grains may work faster, and in a colder environment, slower.

Therefore, if you notice, for example, in the summer that the kefir has reached your preferred consistency before 24 hours, it might be worth straining it earlier.

💡 Good to know

When making kefir, time is just one guide. By getting to know how your own kefir grains work, you'll quickly learn to recognize the state when the kefir is most delicious for you.

I use 24 hours as a starting point, but in the end, I always check the consistency. If the kefir has thickened nicely and doesn't flow freely when the container is gently moved, it has usually reached the state I like.

🧊 Why Do I Refrigerate the Finished Kefir?

After straining, I place the finished kefir in the refrigerator.

Chilled kefir is much more pleasant-tasting and refreshing for me, so I usually wait until it's well-chilled before consuming it.

This way, fermentation and consumption are clearly separated: it's made at room temperature, then served chilled.

Scientific Sources

The following scientific publications address the microbiological composition, fermentation, the effect of different milk types, and the potential physiological properties of kefir and Tibetan kefir grains.

Prado, M. R. et al. (2015). Milk kefir: Composition, microbial cultures, biological activities, and related products. Frontiers in Microbiology, 6, 1177. https://doi.org/10.3389/fmicb.2015.01177
Bourrie, B. C. T., Willing, B. P. & Cotter, P. D. (2016). The Microbiota and Health Promoting Characteristics of the Fermented Beverage Kefir. Frontiers in Microbiology, 7, 647. https://doi.org/10.3389/fmicb.2016.00647
Leite, A. M. O. et al. (2013). Microbiological, technological and therapeutic properties of kefir: a natural probiotic beverage. Brazilian Journal of Microbiology, 44(2), 341–349. https://doi.org/10.1590/S1517-83822013000200001
Fiorda, F. A. et al. (2017). Microbiological, biochemical, and functional aspects of sugary kefir fermentation – A review. Food Microbiology, 66, 86–95. https://doi.org/10.1016/j.fm.2017.04.004
Farnworth, E. R. (2005). Kefir – A complex probiotic. Food Science and Technology Bulletin: Functional Foods, 2(1), 1–17. https://doi.org/10.1616/1476-2137.13938

📚 Important Note

The microbial composition of kefir grains can vary from culture to culture. Therefore, the results of different studies may not be entirely applicable to every kefir culture in the same way. Besides the culture itself, the type of milk, temperature, fermentation duration, and many other factors can influence the outcome of the fermentation.

Thus, scientific findings should be treated as informative background and not as guaranteed properties of a specific batch of kefir grains or homemade kefir.

Important Information

The information in this article is primarily for educational and practical purposes. Tibetan milk kefir grains and the kefir made from them are food, not medicine. Therefore, consuming kefir does not replace medical examination, diagnosis, or treatment.

An increasing number of scientific studies are being published on kefir, and several investigations show interesting, promising results. However, current human studies vary significantly, for example, in the composition of the kefir used, the quantity consumed, the duration of the studies, and the characteristics of the participants. For these reasons, research results cannot be automatically extended to all kefir or all people.

🥛 Hygiene is especially important when making homemade kefir

Since kefir is made at home with the help of live microorganisms, a clean working environment and proper food hygiene are essential.

Always use clean containers and utensils, and store and handle milk properly.

If you observe mold, unusual discoloration, or an unpleasant smell indicating spoilage on the finished kefir or the kefir grains, do not consume it, and do not try to "save" the culture simply by rinsing it.

🌿 Every batch of kefir grains is a little different

The microbial composition of kefir grains can naturally differ from one another. Consequently, two different cultures, even with the same milk and under identical conditions, will not necessarily produce entirely identical kefir.

Therefore, the methods presented in this article – especially the ratio of milk to kefir grains, the fermentation duration, and the care routine – should be treated as a starting point, and then adjusted to the specific behavior of your own culture.

⚠️ If you are unsure

If you have a health condition, milk protein allergy, lactose intolerance, follow a special diet, or are simply unsure if consuming kefir is right for you, it is advisable to consult a doctor or dietitian.

The goal is to make kefir preparation a pleasant and safe part of your daily routine. 🥛🌿

Summary – Care for, observe, and get to know your own kefir grains

🌿 Caring for Tibetan milk kefir grains might seem complicated at first, but by following a few basic rules, you can easily establish a simple, well-functioning daily routine.

The most important points in brief:

🥛 use reliable quality, properly treated milk,
⚖️ adjust the amount of milk to the quantity of your kefir grains,
🌡️ ferment under appropriate conditions, at room temperature,
⏰ observe the consistency of the kefir, not just the clock,
🧼 work with clean utensils and containers,
☀️ protect the fermenting container from direct sunlight,
❄️ for shorter breaks, rest the culture in the refrigerator,
🧊 for longer breaks, consider proper storage,
🌱 observe the growth and usual state of your kefir grains,
👃 and always take signs of mold, unusual discoloration, or spoilage smells seriously.

In my experience, kefir making truly becomes simple when you no longer search for a recipe for every single step, but learn to recognize how your own Tibetan kefir grains behave.

You will learn how much milk it thrives on, approximately when the kefir will be ready, what consistency properly fermented kefir has, and when you should anticipate shorter or longer fermentation times.

This is because kefir grains are a living culture. They are not a factory part that works exactly the same way every day. The environment, the milk, the temperature, and the culture itself all influence the final result. Scientific literature also shows that the microbial composition of kefir grains and the fermentation outcome can vary by culture and conditions.

🥛 Would you like to try making homemade kefir too?

If you don't have your own Tibetan milk kefir grains yet, it's worth getting them from a source where the culture is properly cared for, ensuring you receive fresh, active kefir grains.

On the kefirgomba.eu/en website, you will find living, carefully nurtured Tibetan milk kefir grains, with which you can start your own homemade kefir routine.

👉 View Tibetan milk kefir grains on kefirgomba.eu/en

Start with a good culture, observe how it works, and within a few weeks, kefir making can easily become a natural part of your daily life. 🌿🥛

Happy kefir making! 😊

How to Care for Tibetan Kefir Grains? – A Complete Guide for Beginners