Organic milk kefir grains. Reconstitutes to 6g fresh milk kefir grains to prepare initial 600ml milk kefir. The shelf life for our dehydrated milk kefir grains is 1 year. We put a best before date on all our milk kefir grains packages. All grains come with activation/care instructions and kefir recipe. We provide customer care for all our retail and wholesale customers. How to activate dried milk kefir grains? 1. Add milk kefir grains to 100ml milk. 2. Ferment 24 hrs (20-24°C). After 12 hrs stir gently. 3. After 24 hrs strain with fine mesh sieve and wash the grains with lukewarm water. 4. Repeat the first 3 steps 5-7 times. Start using 200ml of milk when grains show activity (souring, thickening).