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The Kefir and Kombucha Shop:
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Live Water Kefir Grains – Endless Homemade Probiotic Drink Starter
Rated 4.86 out of 514,90€Original price was: 14,90€.12,90€Current price is: 12,90€. -
Live Milk Kefir Grains – Endless Homemade Probiotic Drink Starter Culture
Rated 4.75 out of 516,90€ – 24,90€Price range: 16,90€ through 24,90€ This product has multiple variants. The options may be chosen on the product page -
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Live Kombucha SCOBY – Endless Homemade Probiotic Tea Fermentation Starter
Rated 4.50 out of 519,90€Original price was: 19,90€.17,90€Current price is: 17,90€. -
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Lot of Water Kefir Grains 30g + Milk Kefir Grains 20g
Rated 5.00 out of 537,80€Original price was: 37,80€.28,90€Current price is: 28,90€. -
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Artisanal Calf Rennet – 50 ml for 500 L of Natural Homemade Cheese
14,90€Original price was: 14,90€.12,90€Current price is: 12,90€. -
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Lot of Fruit Kefir Grains 30g + Milk Kefir Grains 20g + Kombucha SCOBY
55,70€Original price was: 55,70€.45,90€Current price is: 45,90€.
Natural Probio, producer of natural lactic ferments, kefir and kombucha
At Natural Probio, we understand the important role natural lactic acid bacteria play in the proper functioning of the body. These bacteria, whose use dates back thousands of years, are primarily used for the fermentation and preservation of certain foods. Committed to helping you maintain, or even regain, your well-being, we have developed a range of natural products, including kefir and kombucha, allowing you to enjoy their benefits.


Premium natural ingredients

Probiotics grown under ecological and ethical conditions

A company close to its customers, always listening

We use eco-friendly and sustainable packaging
The secret to making kefir lies in the use of kefir grains. These grains are conglomerates of beneficial microorganisms that induce the fermentation of sugar water or dairy products, depending on the type of kefir desired. These living grains, unique to each type of kefir, are reusable indefinitely, providing a sustainable and natural source for your fermented drinks.
Water Kefir:
Water kefir is also called Tibicos or Japanese crystals (size between 2 and 20 mm, soft, and of varying colors).
There are several versions of its origin. The most likely is animal origin. Researchers say it’s a natural culture that has existed for millions of years (the grains multiply completely each time). Some say that ancient people who made gourds from sheep stomachs noticed that the water they put in them became carbonated. This came from the kefir grains that were naturally found in stomachs to aid digestion. Other researchers say that in 1899, one of them saw kefir crystals on a plant. They fed on the plant’s sugar and drank the dew.
Kefir production and grain multiplication are rapid:
The crystals are active and develop at room temperature, producing carbonic acid, like champagne, which explains its refreshing and tangy flavor.
Simply place kefir grains in a jar, add water and sugar. The sugar decomposes during fermentation (this will create carbonic acid, alcohol (between 0.5% and 1.5%), metabolic products, and microorganisms). You can replace the water with tea and add dried figs, raisins, dates, or dried apricots. After a few hours of patience, you’ll see the kefir grains rise, divide, and bounce. It takes between 1 and 3 days for the kefir to be ready.
If you want to make another batch of kefir, you’ll need to use up some of the crystals (see recipe). The crystals increase in volume with each batch.
Making kefir requires very little effort or equipment and is very quick and easy.
Milk kefir:
Milk kefir is an aggregate of microorganisms, like its cousin water kefir. It is a microbial culture that ferments milk and produces a refreshing and delicious drink: the milk kefir lumps are hermetically sealed and ferment for 1 or 2 days.
The origin of the word kefir comes from the Turkish language: “Kef” means pleasant consistency. It is also called “Tibetan mushroom,” “Kefir tuber,” or “Caucasian milk kefir.” These kefir grains were passed down from generation to generation.
Unlike water kefir, milk kefir must ferment in a container away from light (this lasts between 24 and 48 hours). The grains resemble cauliflower.
During fermentation, the milk sugar breaks down, making the milk creamy. The fermented mixture must be sieved through a plastic sieve and placed in a tightly capped glass bottle in the refrigerator. The kefir grains will be used for further fermentation, and so on, ad infinitum; they can last a lifetime if cared for regularly and properly. The grains can be stored in the refrigerator for several weeks and will keep for a very long time if dried (the recovery period will be a little longer).
The grains multiply very slowly (they double in 1 month). Fresh farm milk is the best source for the grains.
Making kefir requires very little effort or equipment and is very easy and quick.
Why choose Kefir?
Another day where your digestion is playing tricks on you?
Are you fed up with that feeling of heaviness that just won’t let go?
Probiotic capsules, advice picked up everywhere, have you tried it all?
Rest assured, a solution exists.
Imagine… You eat without any fear. Your stomach feels light, your energy returns.
And above all, you know exactly what you’re consuming: a living beverage, prepared by you, without additives. KEFIR.
A miraculous drink available in two varieties: milk kefir and water kefir, also known as fruit kefir.
A thousand-year-old health secret that rebalances your body, naturally, with no side effects.
Why choose Kombucha?
Are you tired, your mind filled with negative thoughts, looking for a solution to your exhaustion and digestive problems?
Have you tried everything: commercial products, advice from others, but nothing really seems to work?
Kombucha, this sparkling drink with tangy notes, could be what you’re missing. Find more energy and smoother digestion.
And the best part is, it’s a lasting transformation that you can concoct at home.
An energizing drink, but also a real ally for your digestion.
Take back control of your health by preparing your own fermented drink, without any side effects.
Kombucha, a natural fermented beverage made from tea, sugar, and symbiotic bacteria and yeast called SCOBY (Symbiotic Colony of Bacteria and Yeast), is known for its many health benefits, including digestion, immunity, and detoxification.
Benefits of Kombucha: Rich in Probiotics, Amino Acids and Antioxidants
Kombucha’s unique fermentation process enriches the beverage with probiotics, amino acids, and antioxidants. These probiotics promote a healthy balance of intestinal flora, improving digestion and strengthening the immune system. The amino acids and antioxidants in kombucha help fight free radicals and prevent various diseases.
Kombucha: A Natural and Healthy Alternative
As a natural alternative to carbonated drinks and processed fruit juices, kombucha stands out for its low sugar and calorie content. Additionally, its low caffeine content makes it a perfect option for those looking to reduce their caffeine intake.
Versatile Uses of Kombucha
Kombucha is extremely versatile in its uses. It can be enjoyed on its own, blended with fruit juices or herbs for custom flavors, or even used as a culinary ingredient to marinate meats and create unique dressings and marinades.
Homemade Kombucha: Simple and Accessible
Making kombucha at home is a simple and accessible process. A basic recipe requires only tea, sugar, and a SCOBY. After a week of fermentation, you’ll have kombucha ready to enjoy or bottle for a second fermentation.
Living fermentation, in your hands
Why settle for industrially produced fermented drinks, often pasteurized and depleted of probiotics, when you can make your own at home? With our natural kefir and kombucha starter cultures, you can take control of your gut health while enjoying a fresh, vibrant drink perfectly tailored to your tastes. Our starter cultures allow you to prepare truly vibrant drinks, rich in probiotics and essential nutrients, with no hidden sugar or preservatives. It’s more economical, more environmentally friendly, and infinitely more rewarding.
Join the community of fermentation enthusiasts with Natural Probio and rediscover the true taste of life. Because taking care of your microbiota means investing in your daily well-being.
All you have to do is watch our recipe tutorials and start the adventure!
Not sure which ferments are right for you?
Take this quiz to find out in just a few clicks!

From Earth to Fermentation: A Predestined Journey
Natural Probio was born from agricultural roots, from a family attached to the land and respect for all living things. This culture has awakened a unique sensitivity to the subtle and powerful benefits of nature for intestinal balance and the microbiota.
This curiosity naturally led us towards ferments: kefir and kombucha, with recognized benefits for digestion and the immune system.
As we researched and explored microorganisms, our passion became a mission.
At Natural Probio, we develop active and authentic ferments, designed for those who wish to treat their digestive problems naturally by making their own homemade probiotic drinks: kefir, kombucha and other live preparations.
Adopt a fermented diet and enjoy the benefits of probiotics thanks to our artisanal cultures.
Take charge of your health: create your own live bacteria drink and say goodbye to digestive problems!
We are convinced of the quality of our ferments, which is why we offer you a lifetime guarantee against any inactivity of your grains handled under normal conditions.

+ 20,000 customers trust us around the world!
Today, our kefir and kombucha products are used all over the world: thousands of customers trust us, and we thank them!
Customer experience is a priority for us, which is why all our customers are 100% satisfied or refunded, and we offer 24/7 support.
Please do not hesitate to contact us if you have any problems with your culture. We will assist you and, if necessary, replace your product promptly.