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Old 12-18-2012, 03:40 AM   #1
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Default Mold or Yeast...Sorry to ask again

I know this has been asked before but I can't make up my mind.

On 12/13 I divided hopped, 1.030 wort into three containers, placed one in my attic, one in my cellar, and one in my front yard. On 12/14 I transferred them to growlers and airlocked them.

The one from my attic has seen the fastest growth...of something. At first I was certain it was white mold, but now I'm wondering if it is indeed yeast. There are bubbles coming through.

They started off as a few small, round, white spots on top of the wort and have since multiplied to this:

attic-yeast.jpg

What do you think?

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Old 12-18-2012, 03:48 AM   #2
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taste it with a sanitized turkey baster!!

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BL, CL, Miller etc. is like makin love in a canoe.....
its fkin close to water.
Lagering/conditioning: German pils, Dortmunder
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Old 12-18-2012, 03:51 AM   #3
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Ha I wish. Unfortunately pathogens can reside in unfermented wort. Diarrhea city.

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Old 12-18-2012, 04:11 AM   #4
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Do you have access to a microscope?

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Old 12-18-2012, 04:17 AM   #5
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Relatively quick access. What would I be looking for?

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Old 12-18-2012, 08:14 PM   #6
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This is funny. I made some 1.040 wort that I lightly hopped with a handful of aged hops on the evening of the 15th. I felt it on my front porch (covered with a wire strainer) from about 8 pm until 8 am; it got down to about 40 degrees that night. I transfered to a sanitized growler and shook the be-jesus out of it. To make a long story short I had growth in mine, yesterday morning that looked EXACTLY like that, with almost 1/2 again as much when I got home from work. I tried sniffing but all I smelled was bitter-ish (old-hops) and unfermented wort. When I swirled it though it did off gas a little and form a bit more krausen with dissipated in about 10 minutes or so. I would also LOVE to know what it is we caught.

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Old 12-18-2012, 08:55 PM   #7
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Quote:
Originally Posted by BenWillcox View Post
This is funny. I made some 1.040 wort that I lightly hopped with a handful of aged hops on the evening of the 15th. I felt it on my front porch (covered with a wire strainer) from about 8 pm until 8 am; it got down to about 40 degrees that night. I transfered to a sanitized growler and shook the be-jesus out of it. To make a long story short I had growth in mine, yesterday morning that looked EXACTLY like that, with almost 1/2 again as much when I got home from work. I tried sniffing but all I smelled was bitter-ish (old-hops) and unfermented wort. When I swirled it though it did off gas a little and form a bit more krausen with dissipated in about 10 minutes or so. I would also LOVE to know what it is we caught.
I'm starting to think this is yeast. I think the small white spots floating on the wort are yeast colonies and now they're multiplying and starting to form a krausen. At least I hope so. They don't look fuzzy, and everyone says that if it's mold it will be fuzzy. I guess we just give it a couple weeks and see what happens. This is a good article if you haven't yet seen it: http://www.themadfermentationist.com...-starters.html
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Old 12-18-2012, 09:24 PM   #8
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Yeah, I have seen the article. His site is pretty damn great, and one of the first (Good) online resources I found for sour beers, besides here of course.
More than anything I was surprised at how fast mine seemed to grow something, yet how unlike any of my other yeasts it has looked (so far anyway). As I said, mine looked just like your top post a little over 24 hours after I put it in the growler and oxygenated (via shaking). I will report back tonight, possibly with a pic.

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Old 12-18-2012, 09:52 PM   #9
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That'd be great, thanks. I'll do the same. That'll be helpful since we're on a very similar timeline. It's also interesting that my outside container has hardly grown anything, it just has a few floating white spots, but the one from my attic went crazy.

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Old 12-19-2012, 01:31 AM   #10
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This appears to be Krausen to me...



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