Hmm, my friend must have had inferior kefir grains. Where did you get yours? I’d like to try again.
Etsy believe it or not. Grains can go bad or be bad from the start if they go through the mail. About 6-7 days to brew a half gallon, first day left out, after that in the fridge. Strain and drink, thick smooth and a nice buttermilk type finish.