Trustpilot 4.8 out of 5Over 20,000 customers worldwideDispatched within 24 to 48 hours, trackedLifetime guarantee on your grains' activitySee the milk kefir grains →
Natural Probiokefir-grains.co.ukHomemade milk kefir with live grains, by Natural Probio
Kefir Grains UK › Choosing your kefir

Choosing your kefir: a plain guide to the Natural Probio range

In short

Want something creamy and sour for breakfast and the kitchen? Milk kefir grains: 10 g for roughly half a litre a day, 20 g for roughly a litre. Prefer a fruity, fizzy drink with no milk in it? Water kefir. Fond of tea and deeper flavours? The kombucha SCOBY. Keen on both kefirs? The milk and water kefir duo. Want to try everything? The complete kit, which costs less than buying the three cultures one by one.

Whatever you choose, it reaches you alive, it comes with a step-by-step guide and it is backed by the same promise. So the decision really comes down to two things: what you enjoy drinking, and how many people are at your table.

Every option, side by side

Start here
Natural Probio milk kefir grains

You love dairy and a proper breakfast

Milk kefir grains

Thick, sour, pourable kefir to drink on its own or cook with.

  • First glass the day after you start
  • 10 g for roughly half a litre a day, 20 g for roughly a litre
  • Guide and recipe collection
See the milk kefir grains
Natural Probio water kefir grains

You're after something fruity with bubbles

Water kefir grains

A light, fizzy homemade drink, flavoured with whatever fruit you fancy.

  • Ready the day after
  • 30 g for roughly a litre a day, 60 g for roughly two
  • No milk involved
See the water kefir grains
Natural Probio kombucha SCOBY

You'd never say no to a cuppa

Kombucha SCOBY

Sparkling tea that balances sweet and sharp, flavoured however you like.

  • Ready in about a week
  • Posted in its own liquid
  • Guide included
See the kombucha SCOBY
Natural Probio milk kefir grainsNatural Probio water kefir grains

Your household can't agree

Milk and water kefir duo

Creamy kefir in the morning, fizzy kefir from lunchtime on.

  • 20 g of milk kefir grains plus 30 g of water kefir grains
  • A guide for each
See the duo
Best value
Natural Probio milk kefir grainsNatural Probio water kefir grainsNatural Probio kombucha SCOBY

You want the lot, or a generous present

Complete kit

Milk kefir, water kefir and kombucha in a single box.

  • Three cultures, three guides
  • Cheaper than buying them separately
See the complete kit

The range in a table

OptionFlavourReadyBest for
Milk kefirCreamy, sourThe day afterBreakfast, smoothies, cooking
Water kefirFruity, fizzyThe day afterSwapping out cans of pop
KombuchaSparkling tea, deeperIn about a weekTea drinkers
Milk and water kefir duoCreamy plus fizzyThe day afterHomes with mixed tastes
Complete kitAll threeA day to a weekTrying everything, presents

10 g or 20 g of milk kefir grains?

Picture your fridge. If you are the only kefir drinker and fancy a glass most mornings, the 10 g pouch, giving roughly half a litre a day, is plenty, and it is a gentle way to find out whether kefir is for you. If there are two or more of you, or you plan to put kefir in scones, soda bread and marinades as well as in a glass, take the 20 g pouch for roughly a litre a day. A handy rule of thumb: match the pouch to how much milk your household already goes through.

Milk kefir or water kefir?

Two cultures, two quite different drinks. Milk kefir grains thicken milk into something sharp and creamy, nearer to a runny yoghurt. Water kefir grains turn sweetened water and a bit of fruit into a light, fizzy drink that many people compare to homemade lemonade. Dairy lover? Milk kefir. Want fizz without milk? Water kefir. Can't choose? The milk and water kefir duo spares you the decision. Everything else is in milk or water kefir.

Where kombucha fits in

Kombucha is brewed from sweet tea with a SCOBY and needs about a week to develop its sparkle and gentle sourness. For a nation of tea drinkers it is a natural companion to kefir, bringing an entirely different flavour to the table. You will find it in the complete kit, or on its own in the shop.

Coming from yoghurt or bottled kefir?

Lots of people find their way to kefir grains via homemade yoghurt or a bottle of kefir from the shops. We have compared both even-handedly: kefir or homemade yoghurt and homemade or shop-bought kefir. If you have never fermented anything in your life, the beginner's guide shows exactly what lies ahead.

For lovers of ginger

Natural Probio also sells the ginger beer plant, the traditional culture behind a homemade ginger beer that is lively, warming and fizzy. It sits with the rest of our cultures on the Natural Probio shop.

Choosing questions

Which is simplest for a first-timer?

Milk kefir and water kefir are both ready the day after you start, so you see results fast. Go for the one whose flavour tempts you more; both guides are written for beginners.

Can I add another culture later on?

Certainly. Plenty of customers start with one and order a second a few weeks on. The duo and the kit just let you begin together.

What exactly is in the duo?

A 20 g pouch of milk kefir grains and a 30 g pouch of water kefir grains, each with its guide, sent as one order.

Natural Probio milk kefir grains, part of the milk and water kefir duo
Trustpilot 4.8 out of 5

Still torn? Order the duo

Milk kefir for breakfasts and baking, water kefir for a fizzy glass at lunch: two homemade drinks, two guides, one parcel.

  • 20 g of milk kefir grains plus 30 g of water kefir grains
  • Cultures from time-honoured methods
  • Real people answering your emails
  • Your money back if it isn't right
See the duo

Grains from time-honoured methods, unique and resilientDispatched within 24 to 48 hours, trackedLifetime guarantee on your grains' activityOver 20,000 customers worldwide

Natural Probio, live cultures for your kitchen

Milk kefir grains, water kefir grains and kombucha SCOBY, sent live to the UK, across Europe and worldwide, with a step-by-step guide, recipes and a team that replies. More than 20,000 customers have started their homemade drinks with Natural Probio. Our cultures come from time-honoured methods, passed on unchanged: that is what makes our grains and SCOBY unique, vigorous and resilient.

Trustpilot 4.8 out of 5

A question before you order?

Which size to pick, how long delivery takes to your postcode, how to get going: write to us in English, German, Italian or Spanish. A real person replies within one working day, before and after your order.

Live grains from time-honoured methods Dispatched within 24 to 48 hours, tracked Lifetime guarantee on your grains' activity Over 20,000 customers worldwide Trustpilot 4.8 out of 5
Milk kefir grains Trustpilot 4.8 out of 5Order