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Moldy Looking Yeast

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johnhenryrolf

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Jan 16, 2016
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Location
Aliceville
Okay, bear with me, I tried to look at past threads about this but couldn't find much on it...I have stored some US-05/trub in mason jars, and after a couple days in the fridge it looked like the yeast was starting to come to life! Looked like there were clumps on the yeast cake. Then, after a couple more days it looked like there was some black stuff on top of all of the yeast. Any ideas?
 
I'll try to get some pics, but I'm not sure if it's just the shadows messing with me, or what...I don't have a very good camera, so we'll see what happens. I'm just perplexed with why the yeast would seem to have come "alive" in the fridge. I have a good trub cake, but it seems like the yeast is still active after being chilled. I'll try to update, and thanks for your patience!...I tried taking some pics, and as I foretold they didn't do my situation much justice. I am thinking that maybe I'm just seeing some shadows that are projected from the clumps that are forming on top of the cake; which is my main concern. Why would the yeast seem to have been active after being chilled? I'm not concerned with this yeast because it's US-05, but that's why I'm experimenting with a cheaper strain...I'm just trying to see if there are any other experiences out there similar, or to raise some awareness to those who are "newbies" like me. Thanks!
 
The yeast may be coming alive from trapped CO2 escaping. Loosen the lid a bit and listen for a very slight pressure release.
 

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