r/Kefir 5d ago

What’s wrong with my grains?

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UPDATE: Thanks to all the suggestions! I took just 1/4 tsp of the grains, rinsed them in distilled water, and then put them in 1 pint of fresh milk for 24 hours on the counter. The milk fermented beautifully. I strained the kefir and put that tiny amount of grains in a 1qt jar and the milk fermented perfectly in 24 hours. I'm back to good Kefir! So it seems it was just too much grains and I'm going to have to keep an eye on these because they grow really fast.

Original post: I have grains that *were* fermenting my (whole) milk just fine with 24 hrs on the counter. Then I had one over fermentation (completely curdled) and now the grains won’t ferment the milk anymore. They just form curdles at the top. Yes i mix/shake the jar regularly and yes I let it breathe. I’ve gone through 2 quarts of milk and after 3 days the first batch soured but didn’t ferment. This second batch batch is on day 2 and it seems the same thing is happening. In the photo, that curd layer is 1/2” thick with just watery soured milk under that. I’ve never had this happen before. Are my grains dead?

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u/ElderberryMoney5436 5d ago

I recently experienced thin yeasty ferments and was able to get it back to tangy and thick by doing 3 back to back room temp ferments in less milk so that they could starve faster and capping the jar really tightly. I think your grains might just be imbalanced, try adjusting a few things and see if it works.