Organic water kefir grains Kefirko water grains are used to make water kefir, a refreshing, lightly fermented, probiotic-rich beverage that’s dairy-free. Reconstitutes to 30g fresh water kefir grains to prepare initial 600ml water kefir. Store the Water Kefir: Seal the strained water kefir in bottles or jars and store them in the fridge. Water kefir should be consumed within 5–7 days. Reusing the Grains: After straining, you can immediately add fresh sugar water to the kefir grains to begin a new batch. Store the grains in a small amount of sugar water in the fridge if you're not brewing another batch right away. The shelf life for our dehydrated water kefir grains is 1 year. We put a best before date on all our water kefir grains packages. All grains come with activation/care instructions and kefir recipe. We provide customer care for all our retail and wholesale customers.