Water Kefir Grains
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Product Info
Premium Organic Water Kefir Grains – Refreshing, Probiotic & Easy to Brew
Enjoy crisp, naturally fizzy water kefir made easily at home with our premium organic water kefir grains.
Water kefir is a refreshing fermented drink made by culturing sugar water with water kefir grains — a living culture containing a symbiotic community of beneficial bacteria and yeasts. Once your grains are activated, a batch typically ferments in just 24–48 hours and can be flavoured with fruit, ginger, herbs, juices and more.
Our water kefir grains are carefully cultured in small batches before being dehydrated for safe transport and long-term preservation. Once rehydrated and activated, your grains can be maintained and reused continuously, producing batch after batch of delicious water kefir — a true buy-once, ferment-forever culture.
You Will Receive
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Organic Dried Water Kefir Grains: Choose your ideal batch size:
- 500ml (30g rehydrated) – perfect for small, regular brews.
- 1000ml (60g rehydrated) – ideal for families or higher daily consumption.
- 1500ml (90g rehydrated) – best value for larger batches or frequent brewers.
- High-quality double-sided full-colour instruction sheet: Clear, easy-to-follow instructions covering rehydration, activation and ongoing care, designed to also look great as part of a gift.
- Ongoing Support: Personal help whenever you need it via email, chat or phone.
Why We Ship Our Water Kefir Grains Dried
We intentionally ship our water kefir grains dehydrated to protect them during transport. Water kefir grains are soft and fragile when wet, making them more susceptible to being crushed or damaged in the post.
From our experience growing and shipping water kefir cultures, we’ve found dehydration to be the most reliable way to protect the grains during transport. It places the culture into a stable state, making the grains more resilient during shipping and extending their shelf life without compromising their ability to reactivate. They rehydrate quickly once placed back into fresh sugar water and begin returning to active fermentation.
Your grains will typically ferment a fresh batch every 24–48 hours and can be reused indefinitely. Our water kefir has also been independently microbiologically tested — view our microbiological analysis report.
Delivery Details
Your water kefir grains are carefully dehydrated before shipping to protect their delicate structure during transport. In their dried, dormant state they are more resilient to postal handling and remain shelf-stable for at least 6 months.
There’s no need to activate them immediately when they arrive. Simply store your dried grains appropriately until you’re ready. When you want to begin, place them into fresh sugar water and follow the included activation instructions. The grains rehydrate quickly and begin waking up straight away.
Arrive Alive Guarantee
We want you to order with confidence. In the rare event your water kefir grains don’t successfully activate after following our rehydration and activation instructions, we’ll send you a free replacement. Your success with your water kefir culture is guaranteed.
Why Make Water Kefir at Home?
- Contains a diverse community of bacteria and yeasts produced through natural fermentation
- Refreshing alternative to commercially produced soft drinks
- Control exactly what goes into every batch
- Experiment with fruit, ginger, herbs, juices and countless flavour combinations
- Naturally carbonated through fermentation
- Reusable living culture that can produce batch after batch indefinitely
Want to see what’s in our water kefir? View our independent microbiological analysis report.
Why Choose The Fermentation Station?
With over 20 years of experience and thousands of happy customers, we guarantee carefully prepared cultures, fast shipping, clear instructions and full support every step of your fermentation journey.
Frequently Asked Questions
Why are your water kefir grains dried instead of shipped wet?
Water kefir grains are soft and relatively fragile when wet, making them more susceptible to being crushed or damaged during transport. From our experience growing and shipping water kefir cultures, we’ve found dehydration to be the most reliable way to protect them in the post. It places the culture into a stable, dormant state and significantly extends its shelf life. Once placed back into fresh sugar water, the grains rehydrate quickly and begin returning to active fermentation.
Does drying damage or weaken the water kefir grains?
No. Drying simply places the culture into a preserved state so it can be transported and stored safely. The grains rehydrate quickly once placed back into fresh sugar water and begin returning to active fermentation. They may take a few fermentation cycles to reach their full strength, but the rehydration process itself is quick and simple.
How long do dried water kefir grains take to activate?
Water kefir grains rehydrate quickly once added to fresh sugar water and begin waking up straight away. You can usually start seeing signs of fermentation within the first few cycles, with the grains becoming progressively stronger as they fully acclimatise to their new environment. Simply follow the included step-by-step instructions and continue refreshing the sugar water as directed.
How long does water kefir take to ferment?
Once your grains are fully activated, a batch will typically ferment in 24–48 hours, depending on room temperature and other environmental conditions. Warmer conditions generally ferment faster, while cooler conditions can slow fermentation.
How much sugar do I use?
Use 1–2 tablespoons of sugar per 250ml of water. Organic raw sugar, white sugar or rapadura can all be used.
Can I flavour water kefir?
Absolutely. After the first ferment, water kefir can be flavoured with fruit, ginger, lemon, berries, herbs, juices and many other ingredients. A second fermentation can also produce additional natural carbonation.
Can I use honey?
We don’t recommend honey for regular water kefir fermentation. Honey can have antimicrobial properties and isn’t the preferred food source for maintaining healthy water kefir grains. Use an appropriate sugar instead.
How long will the grains last?
With proper care, water kefir grains can be maintained indefinitely. They are a reusable living culture and, under suitable conditions, can continue fermenting and multiplying over time.
Do I have to activate them as soon as they arrive?
No. One of the major advantages of receiving your grains dehydrated is their excellent shelf life. In their dried state, they are shelf-stable for at least 6 months, so you can activate them whenever you’re ready. Once placed into fresh sugar water, they rehydrate quickly and begin waking up straight away.
How do I store my grains if I need a break?
For a short break, place your activated grains in fresh sugar water and refrigerate them. Refresh the sugar water periodically to help maintain the culture during storage.
What if my grains don’t activate?
Your grains are covered by our Arrive Alive Guarantee. If you’ve followed the supplied activation instructions and your grains still don’t successfully activate, get in touch with us. We’ll help troubleshoot the process and, in the rare event that the culture has failed, provide a free replacement.
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Organic Dried Water Kefir Grains: Choose your ideal batch size:
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