2
votes
3answers
1k views

What is causing a bad flavor after cold conditioning?

I've had something happen to a couple batches and can't figure out what's going on. What happens is a major flavor change after the first two weeks of primary, but for the worse. Normally my beers ...
11
votes
5answers
1k views

Is it necessary to aerate wort when pitching onto an existing yeast cake?

To my knowledge, aeration provides oxygen so that the yeast can reproduce before fermentation. If you're pitching onto an existing yeast cake, there should theoretically be enough yeast already to ...
14
votes
4answers
5k views

How to Properly Oxygenate Wort

How much oxygen do I need to put into my wort? I've heard that homebrewers need to aerate with an oxygen stone and either aquarium pumps or oxygen. Is this true, or is shaking my carboy enough to ...