jescholler
Well-Known Member
This past Sunday I harvested some yeast from an ESB after 2 weeks of primary fermentation. I just poured the slurry into mason jars. Two days later when I went to decant the beer and top off with boiled cooled water, I noticed a lot of bubbles on top of the beer. It reminded me of pictures I've seen of pellicles. It was somewhat chunky when I poured off the floating stuff. After adding the water, I shook it up and let the heavy stuff settle out before pouring into new mason jars. Now, one day after doing that, I see more bubbles. I don't think the bubbles are coming from the slurry. It seems more like they just never sink.
My question is, what are the chances that the yeast is infected? Two days for a pellicle to form seems damn fast. What else could the bubbles be? Maybe 2 weeks of fermentation wasn't long enough, but the fermentation was strong and the gravity was on the low end of what I expected.
My question is, what are the chances that the yeast is infected? Two days for a pellicle to form seems damn fast. What else could the bubbles be? Maybe 2 weeks of fermentation wasn't long enough, but the fermentation was strong and the gravity was on the low end of what I expected.