The kefir duo: a sparkling water kefir and a creamy milk kefir
At a glance
The kefir duo brings together 30 g of live water kefir grains and 20 g of live milk kefir grains, each with its own guide. One makes about a litre a day of light, fruity, sparkling drink; the other turns about a litre of milk a day into a thick, gently tangy kefir for breakfast, smoothies and cooking. Both are ready the next day, and both are covered by the Natural Probio guarantee.
- In the parcel
- Water kefir 30 g, milk kefir 20 g
- Each day
- About 1 litre of each
- Guides
- 2 included
- Ready
- The next day
They share a name, but water kefir and milk kefir are two separate cultures that make two quite different things. That is precisely why so many households end up with both. The kefir duo is our answer to the question we hear most from families: "Can we have one for breakfast and one for the rest of the day?"
Inside the kefir duo
- Water kefir grains, 30 gLive, in their own liquid: about a litre of sparkling, fruity drink a day.
- Milk kefir grains, 20 gLive grains that turn about a litre of milk a day into creamy kefir.
- Two guidesOne per culture, step by step, written for people who have never made either.
- Exclusive recipesVia the QR code in the booklet: flavoured bottles, smoothies, breakfast bowls and more.
- Lifetime guaranteeOn the activity of both cultures, used and kept in normal conditions.
A day with the kefir duo
Here is how it tends to look in a busy household. Nothing here takes more than a few minutes.
| When | Milk kefir | Water kefir |
|---|---|---|
| Breakfast | Poured over granola or blended with banana and berries | Strain yesterday's jar and bottle it with lemon |
| Midday | A quick dressing of kefir, garlic and herbs | A chilled glass with lunch instead of a can |
| Evening | A dollop on a curry or a baked potato | A flavoured bottle on the table at dinner |
Your exact routine is in the two guides; this simply shows how naturally the two drinks slot into a normal day.
Two kefirs, two textures
Water kefir is clear to lightly cloudy, refreshing and fizzy, made with water, sugar and fruit, and contains no milk at all. Milk kefir is thick, smooth and pleasantly sour, closer to a pouring yoghurt, and it is as at home in the kitchen as in a glass. If you want the full side-by-side, read water kefir or milk kefir.
Because the two cultures are kept apart, each in its own jar, there is no risk of one affecting the other. Each guide explains its own simple routine.
Who the kefir duo suits
- Families with different tastes at the table: the creamy kefir lovers and the fizzy drink fans.
- Keen home cooks who want milk kefir for baking, marinades and dressings, and a homemade drink to serve alongside.
- Breakfast people who like a smoothie in the morning and something lighter in the afternoon.
- Anyone who cannot decide between the two kefirs and would rather not have to.
If kombucha appeals as well, the complete kit adds a SCOBY and a third guide. To compare every option, see which one to choose.
From customers with both kefirs
"Good customer service. Very happy with my milk and water kefir pack, and they're delighted to advise you on any question. I recommend it to everyone."
Irene M., July 2026Trustpilot review, translated from Spanish"After a few days making milk kefir we've got the hang of it and it comes out perfect, delicious. The explanations are clear and they even offer personal support if any doubts or problems come up."
Alex C., September 2026Trustpilot review, translated from SpanishQuestions about the kefir duo
Can I use any milk for the milk kefir?
The guide supplied with your milk kefir grains explains which milks work best and how to get the texture you like.
Do the two kefirs need different equipment?
Just two glass jars, a sieve (ideally a separate one for each), a cloth and a bottle. Nothing you need to buy specially.
Can I start them on different days?
Yes. Start one on arrival and keep the other pouch in the fridge for a few days, as each guide describes.
Is the duo guaranteed like single products?
Yes. Both cultures are guaranteed alive on arrival and covered by our lifetime guarantee on activity.
The kefir duo
Water kefir for the fizz, milk kefir for the creaminess: two live cultures and two guides in one parcel.
- Water kefir grains 30 g and milk kefir grains 20 g
- About a litre of each, every day
- Two guides and exclusive recipes
- Lifetime guarantee on activity
Grains from time-honoured methods, unique and resilientDispatched within 24 to 48 hours, trackedLifetime guarantee on your grains' activityOver 20,000 customers worldwide
