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Company details

  1. Brewing Supply Store
  2. Aerated Drinks Supplier

Written by the company

The home of kefir soda and dehydrated water kefir grains. Our kefir soda is handmade in the UK using high quality natural ingredients.


Contact info

4.3

Excellent

TrustScore 4.5 out of 5

17 reviews

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Replied to 100% of negative reviews

Typically replies within 24 hours

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Rated 5 out of 5 stars

Absolutely fantastic product - highly recommend!

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

23 March 2026
Fizzy Buoys logo

Reply from Fizzy Buoys

We're thrilled to hear your grains are growing quickly and you're brewing your own water kefir! You can also slow down the cycle by placing the grains in the fridge in sugar solution until you need to use them again :)

Rated 5 out of 5 stars

I bought through their Etsy store and…

I bought through their Etsy store and these water kefir grains are AMAZING, a few months in I'm making 2 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.

4 January 2026
Unprompted review
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Reply from Fizzy Buoys

Thanks for sharing your knowledge! We're thrilled to hear your grains are growing well and that you're brewing your own water kefir. Also...IKEA Blueberry cordial is a great tip. Thank you!

Rated 5 out of 5 stars

Fast shipping and very good…

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

11 March 2026
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Reply from Fizzy Buoys

Thank you for your review, happy to hear you like our product and now brewing your own fizzy kefir water! The Fizzy Buoys 🫧

Rated 5 out of 5 stars

Kefir Grains

Prompt delivery from ordering and really good instructions for activation and production...
grains both growing and bubbling well.
Survey an appropriate time from delivery to make good evaluation of product.

13 March 2026
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Reply from Fizzy Buoys

We're thrilled to hear your grains are growing well and that you're brewing your own water kefir. Happy fermenting, and feel free to reach out if you have questions along the way!

Rated 1 out of 5 stars

Kefor Water Grains didn’t fizz

Kefor Water Grains didn’t fizz, despite faithfully following instructions.
Ordered live grains elsewhere

12 January 2026
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Reply from Fizzy Buoys

Sorry to hear you didn’t experience the fizz you were expecting.

We take great pride in the quality of our live water kefir cultures and in providing clear, easy-to-follow instructions. In most cases where fermentation seems slow or less fizzy, it’s usually due to cooler room temperatures (which can slow the culture down, especially during the winter months) or small differences in the fermentation process.

We’re always happy to help troubleshoot and offer advice, and we wish you had reached out to us first so we could help get things working as they should.

As you can see from our many reviews across Etsy and Trustpilot, our water kefir grains do produce a lively, fizzy ferment when the conditions are right. If you ever decide to try again, we’d be more than happy to assist.

Rated 5 out of 5 stars

Water kefir cultures doing well

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

17 December 2025
Fizzy Buoys logo

Reply from Fizzy Buoys

Thanks so much for your review! We're thrilled to hear your grains are growing well and that you're brewing your own water kefir. Happy fermenting, and feel free to reach out if you have questions along the way!

Rated 5 out of 5 stars

Fantastic product beautifully designed…

Fantastic product beautifully designed and excellent customer service

30 November 2025
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Reply from Fizzy Buoys

Thank you for your review and happy to hear you like our Water Kefir Starter Kit. Enjoy! Fizzy Buoys 🫧

Rated 5 out of 5 stars

Love this product

Love this product, great price for an unlimited supply of water kefir. Comes with simple instructions and you can activate the water kefir grains when needed.

17 November 2025
Unprompted review
Fizzy Buoys logo

Reply from Fizzy Buoys

Thank you for your review, happy to hear you like our product and now brewing your own fizzy kefir water! The Fizzy Buoys 🫧

Rated 5 out of 5 stars

Great product

Great product. Speedy delivery. Useful guide and information.

31 May 2025
Fizzy Buoys logo

Reply from Fizzy Buoys

Thank you for your review and enjoy brewing your fizzy kefir water! The Fizzy Buoys 🫧

Rated 5 out of 5 stars

The kefir grains are excellent quality…

The kefir grains are excellent quality - well wrapped and well presented - thank you
My water kefir is fizzy and I’m very pleased with it.

22 April 2025
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Reply from Fizzy Buoys

Thank you for your review, happy to hear you like our product and now brewing your own fizzy kefir water! The Fizzy Buoys 🫧

Rated 5 out of 5 stars

water kefir grains - working great

Bought some water kefir grains. Clear instructions, and am now 4 delicious batches in and they're still going strong. Very happy

15 April 2025
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Reply from Fizzy Buoys

Thank you for your review and great to hear you're brewing your own Fizzy Buoys Kefir Water. Enjoy! The Fizzy Buoys 🫧

Rated 5 out of 5 stars

My delivery was delayed due to DPD …

My delivery was delayed due to DPD unexpected issue but when soda arrived a day late it was still cool and tasted good as always.

31 March 2025
Fizzy Buoys logo

Reply from Fizzy Buoys

Thank you for your review and great to hear your sodas arrived fresh and chilled despite the courier delay. Enjoy! The Fizzy Buoys 🫧

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