Hey y’all, I recently bought some extra lids for my ferm buckets with some holes pre-drilled in them for #7 bungs. I used one for the first time a couple weeks ago when I started fermentation on an imperial porter I brewed. I used a large starter of us-05, but after a couple days, I was still stuck with no airlock activity, so I increased the temp to about 77 Fahrenheit and added some nutrient (sanitized everything properly, but still had to open her up.) I went out of town the next day, so I figured cranking up the temp a bit would do the trick along with the nutrient. I came back two days ago and checked the gravity, which was 1.022 from my original 1.067. BUT I still had no airlock activity, which tells me those kids probably suck, and I want it to be a bit lower and it was too sweet for my liking anyway, so I threw in another packet of us-05 and a little more nutrient. Checked 24 hours later (this morning) and no further fermentation has occurred. This time, however, I happened to look through the bung hole and saw a wild yeast pellicle (picture below.) I can only assume it got infected through an ill-fitting lid, as I properly sanitized the whole time and there was never any airlock activity despite obviously fermenting. So this morning I grabbed a lid that I know to be airtight, sanitized everything, threw a bung and airlock on that and let it go. My question is, should I let it go with the wild yeast? It actually smelled delicious when I was switching the lids. I don’t see any sign of mold or anything, just obvious pellicle formation. I have no patience issues, I’ll let it go for a while to ferment fully, if I determine to not pitch it.
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