Originally Posted by daringescape
I started a batch of skeeter pee, but it wasn't done before I eft to go camping for 2 weeks. I came home to about 10 fruit flies in the carboy! Is the batch ruined? Or can I salvage it?
I've had fruit flies twice (back when I used a non-sealing fermenter).
One batch was clearly sour. Ugh. We suspect acetobacter, as fruit flies are known for carrying that on them. Dumping 15 gallons of beer was *NOT* appreciated.
The other batch, my bro-in-law (we used to ferment in his place) saw relatively early that the fruit flies had come, so I had him crank the fridge temp down to nearly freezing. We actually were too busy to do anything with it for a while, but when the time came to brew again, I took a taste and it was fine. So I kegged off some of it for myself, he was too disgusted and poured off his portion of the batch, and mine never had a problem. (Since it was kegged, I kept it cold at all times).
So my advice: smell/taste it. If it's okay, package it ASAP. If you're kegging, keep it cold. If you're bottling, pay *careful* attention to the carbonation level, and as soon as it's carbonated, store ALL the bottles in the fridge. Doing this will help to retard the growth of any organisms that can cause it to continue souring if you happen to have bacteria in there.