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fermenting Mold, Yeast or ???

Just saw this today. The pics aren't the best but can anyone tell what this is on top of my mash?
 

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Siv

Extreme Member
I'm no expert but that looks like yeast to me. I would just leave it and let it keep going - if it's mold, you're gonna get black/green/blue stuff. All white and it's likely just yeast. How long has it been going? If it's already a month, you can pop it, take a smell and if it smells good just scrape off the top. I really only trust my nose when it comes to ferments - I have plenty that are quite old and look terrible but smell (and taste) wonderful.
 

Downriver

Extreme Member
Tend to agree with Siv above ^.

Only thing I would add is if the white stuff is hairy, that's most likely mold. However, I enlarged your pics and it looks smooth to me. I'd follow Siv's advice. The nose knows.
 
I'm no expert but that looks like yeast to me. I would just leave it and let it keep going - if it's mold, you're gonna get black/green/blue stuff. All white and it's likely just yeast. How long has it been going? If it's already a month, you can pop it, take a smell and if it smells good just scrape off the top. I really only trust my nose when it comes to ferments - I have plenty that are quite old and look terrible but smell (and taste) wonderful.
I started the mash on 10-21-21. Thanks for the help.
 
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