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Fizzy Buoys

Water Kefir Grains

Water Kefir Grains

Regular price £10.00 GBP
Regular price Sale price £10.00 GBP
Sale Sold out
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Size

Low stock: 7 left

Make your own probiotic soda using our water kefir culture and recipe!

Our easy-to-activate dehydrated water kefir grains are packed full of probiotic cultures. 

5g = 30g of fresh grains once activated and makes 200ml of kefir water in the first batch.


10g = 60g of fresh grains once activated and makes 400ml of kefir water in first the batch.

Easy to rehydrate at home using simple ingredients and our free activation instructions.

Product Info

- Free activation instructions provided with package.
- Try it yourself, design your own flavours using our reusable culture — brew indefinitely with proper care.
- A great gift idea for friends and family members.

Shipping

FREE UK mainland shipping on all orders.

We ship all Kefir Grains and Starter Kit orders via Royal Mail 48 hours Tracked.

Need it quicker? Pay £2.50 for Royal Mail 24 hours Tracked.

We ship all kefir soda orders via DPD next day.

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Customer Reviews

See what our customers are saying

14 April 2026

Absolutely fantastic product - highly recommend! Fast delivery, great instructions. A fabulous product! The only problem...I can't make it fast enough!

L

Laura Peterie

Verified Purchase

7 April 2026

I bought through their Etsy store and these water kefir grains are AMAZING, a few months in I'm making 2 x 750ml bottles every 48 hours. After the second ferment they are explosive!!! After experimenting with types of sugar and ratios, here's what works for these grains 100g of grains plus 100g sugar (66g white sugar, and 34g unrefined demerera cane sugar) in 1500 ml of spring water with 2 dried figs. With that mix my grains are more than doubling every 48 hours. Tried lots of flavours for the 2nd ferment but IKEA's blueberry cordial tops my list so far.

D

David Todd

Verified Purchase

24 March 2026

Fast shipping and very good instructions. I've already made kefir water a couple of times and it's very simple.

A

Andrea Nogales

Verified Purchase

  • Made in The UK 🇬🇧

    Our kefir water is handmade in the UK using high quality natural ingredients.

  • It Tastes Great 😋

    Our kefir soda is a great alternative if you find kombucha tastes too acidic & vingegary.

  • Probiotics 🫃

    Fizzy Buoys kefir soda is pack full of probiotics.

FAQs

I thought Kefir was made with dairy, what’s the difference?

Fizzy Buoys Kefir Soda is made using kefir water grains called Tibicos Mother Culture. They are thought to have been discovered 2000 years ago on the Mexican Opuntia cactus. Instead of feeding the live cultures with milk. We use spring water, cane sugar and fresh fruits and flavours. The friendly bacteria found in our kefir soda will be different to those found in dairy kefir.

How will my Water Kefir Grains be delivered?

Your grains will be delivered using Royal Mail 48 hours Tracked. They will be posted through your letter box with an easy-to-follow recipe and instructions.

Do I need to activate my Water Kefir Grains straight away?

No! Our grains arrive dehydrated and can be activated whenever you want to start making your Kefir Soda. This is also great if you're looking to purchase them as a gift.

How is Fizzy Buoys Kefir Soda flavoured? 

We flavour our products with natural ingredients. Our product contains spring water, kefir cultures, cane sugar, lemon, fig and fresh fruits and herbs.

How do I store my Fizzy Buoys Kefir Soda?

Our product must be kept refrigerated to slow down the fermentation process.