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Fizzy Buoys

Water Kefir Starter Kit

Water Kefir Starter Kit

Regular price £21.00 GBP
Regular price Sale price £21.00 GBP
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25 in stock

Brew your own probiotic water kefir at home — naturally fizzy, delicious, and great for your gut.

Join the culture with our easy Water Kefir Starter Kit, designed for beginners and fermentation fans alike. Each kit includes everything you need to start brewing your own endless supply of naturally carbonated kefir soda at home.

What’s in the Kit

  • 5g dehydrated live water kefir grains (≈30g once activated)
  • 720ml glass fermentation jar
  • 2 tbsp cane sugar
  • 1 dried fig
  • Wooden spoon
  • Thermometer
  • Muslin cloth + rubber band
  • Step-by-step recipe and activation guide

Product Info

Why Choose Fizzy Buoys
- Reusable culture: Brew batch after batch with proper care
- Save money: Make your own probiotic drinks for a fraction of the cost
- Fully customisable: Add your favourite fruits, juices, or herbs for endless flavour options
- Great gift idea: Perfect for health-conscious friends or fermentation enthusiasts

How It Works
Simply activate your kefir grains, feed them with sugar water, and let the natural fermentation magic happen. Within 48 hours, you’ll have a lightly sparkling, probiotic-rich drink ready to flavour and enjoy.

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

27 December 2025

Water kefir cultures doing well. Enjoying watching them grow and look forward to drinking it soon. Thank you

S

Susan Ray

Verified Purchase

10 December 2025

Fantastic product beautifully designed and excellent customer service

T

Tim

Verified Purchase

4 December 2025

Excellent kit! I love how simply everything is packaged and in recyclable material without loads of plastic. The kits has everything I needed to get started and I am on my third batch of water kefir now and loving it. The grains definitely work! I can't wait to perfect the flavouring stage and continue making fermented bubbly drinks at home rather than spending loads on cans of gut friendly drinks that may or may not be doing what they say they do and that have all the industrial traps of packaging and distribution emissions.

A

Abi B.

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.