Below I will explain how to start best, incase of Water kefir First, what is the optimal kefir grains to water ratio ?  Kefir will usually starts to yeast between a ratio from 1:10 to 1:18. This means that 1 tablespoon of kefir grains will ferment at about 1 cup of sugar water and may increase over time to a ratio of 01:24 (= 1...