Making Milk Kefir | Guide and Useful Information
Milk kefir is a probiotic fermented beverage made from milk with the help of milk kefir grains. During fermentation, the living microorganisms in the grains convert lactose into lactic acid, carbon dioxide, and valuable enzymes.
The result: a tangy, slightly sour drink – natural, refreshing, and good for gut flora.
Milk kefir can not only be enjoyed plain but also used in a variety of recipes – for example, in smoothies, dressings, or overnight oats. More on that later – first, let's go step-by-step to making your own kefir.
- Activation time: 5-7 days
- Fermentation time: 24-48 h after activation
- Shelf life: approx. 1 week (in the refrigerator)
Step 1: Activating the Kefir Grains
- Ingredients: approx. 2 L milk
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Tools (included in the Kefir Starter Set)
- 1 g Milk Kefir Grains (dried)
- 1 Kefir Lid
- 1 Oleni Mason Jar | Wide | 0.75 L
If you are starting with dried grains, they must be "awakened" before the first proper fermentation:
Thoroughly clean the jar and the kefir lid.
Add 1g of dried milk kefir grains along with 100ml of milk to the jar. Screw the kefir lid onto the jar and set the lid to "open" so that air can circulate and fermentation can proceed optimally.
Leave the mixture at room temperature for 24 hours. Stir gently after 12 hours.
Pour off the liquid and rinse the kefir grains with lukewarm water.
Return the grains to the jar with 100ml of fresh milk and let them rest for another 24 hours.
Repeat this process daily for 5–7 days. Gradually increase the amount of milk to 200ml as the grains grow. As soon as the liquid smells sour, becomes thick, and possibly forms bubbles, the grains are active.
The grains are now ready for kefir production.
Step 2: Making Milk Kefir
Once your grains are active
Place the activated kefir grains in a jar and add 600 ml of milk. Screw the kefir lid onto the jar and set the lid to "open" so that air can circulate and fermentation can proceed optimally.
Leave the mixture at room temperature for 24 hours.
Pour the finished milk kefir through the integrated sieve in the lid into another jar. Your milk kefir will have a slightly thick consistency due to fermentation and is now ready for consumption. If you want to enjoy it later, you can store it airtight in the refrigerator for about 1 week with the regular lid.
Tip: If you prefer it more sour or thicker, you can ferment milk kefir for up to 48 hours before straining the grains.You can immediately start a new fermentation with the kefir grains by adding fresh milk (600 ml) to the grains. No further activation of the grains is necessary.
Storage of milk kefir grains
If you don't want to make new kefir milk right away, you can store your kefir grains in the refrigerator for 2–3 weeks. Rinse them carefully with lukewarm water and place them in a glass with 100 ml of milk, seal it airtight, and store it in the refrigerator.
Frequently asked questions about milk kefir
What do I do with the grains if I want to take a break?
You can store them in the refrigerator for 2–3 weeks: simply rinse them with lukewarm water, place them in a glass with 100 ml of milk, and seal it airtight.
Can I also use plant-based milk?
Milk kefir can also be made with plant-based milk, such as soy, almond, oat, or coconut milk. However, it is important to note that kefir grains need animal milk for their health and reproduction. Plant-based milk only works to a limited extent – for example, in combination with dates or with regular return to cow's milk. Therefore, many recommend fermenting the grains regularly, at least every 2-3 cycles, back in animal milk to ensure they receive all necessary nutrients.
For completely vegan fermentation, we recommend water kefir or the Turmeric Bug.
What is the difference between activation and preparation?
Activation is a one-time step to bring dried grains back to life. After that, you can continue to use milk kefir indefinitely & make milk kefir – without new activation.
Recipe ideas & inspiration
Are you looking for delicious ways to enjoy your milk kefir or are you more interested in a plant-based, fizzy alternative? Then check out our blog posts on the topic. Here you will find creative and healthy recipes with your favorite ferment.
