I was checking on some harvested yeast (white labs kolsch) and found one of the two jars like this. puffy, opaque white foam that also looks a bit granulated. Guessing its an infection but wanted input. Other jar looks fine but i'm wondering if i can still use it for my next cream ale i'll be brewing sunday. I've harvested yeast about 4 time before. I Always boil my jars 15 min before use. This time i didnt wash the yeast, just swirled with some leftover beer and put into the sanitized jars. this is also first time i've harvested this batch after used. not sure if that made any difference.
Correction: this is actually the 4th collection of kolsch yeast. the first collection of the unwashed batch looks fine.
Correction: this is actually the 4th collection of kolsch yeast. the first collection of the unwashed batch looks fine.
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