Make sure your glass jars/lid are cleaned and sterilised.
Add the grains to the jar and pour in the milk. Seal with a lid or muslin cloth. If using a lid you will need to let it breathe once or twice a day.
Store at room temperature for at least 24 hours, then give it a shake (if using a lid) or a stir. Pour the liquid over a sieve into a fresh jar to strain the kefir grains. Your kefir is ready to drink. Keep in the fridge for up to 2 days.
*Do not rinse the grains when straining. Use them for the next batch or put them in a jar with milk and keep them in the fridge ( for up to 3 weeks).
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