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You "feed them" by moving them to a fresh batch of coconut milk or water, and they literally grow. The local health food store here in Chiang Mai gives the grains away for free if you ask. If you have too many or are going away, you can either dry them out (they become dormant) or store in the fridge for a short while. Loads of sites online about caring for kefir - so much incredible knowledge. I will try to post more about it and yes, happy to being grains along to #SF4 :)

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