I recently brewed a batch of pale ale using Kveik yeast (Omega Voss OYL-061). I fermented in primary at 29 degrees for about 14 days before kegging - it was oxygenated well and went absolutely wild in the first 3 days. It turn out at 5.6% ABV. The beer tastes good - I'm not getting any acetaldehyde flavor - but I only drank just under a liter and woke up with a terrible headache. Does Kveik still produce a lot …

I'd recently heard of fusel alcohol in a reference that it causes headaches/hangovers. First what is fusel alcohol, and what creates it (can I avoid it)? Secondly, is fusel alcohol really the main culprit behind hangovers? I know I stopped making/drinking mead as it was a guaranteed hangover for me the next day.

Both me and my gf noticed that my home brews (even just 1 or 2 a night) cause a fairly noticeable headache in the morning compared to commercial brews. God forbid you get drunk on it, the next morning is hell. I did some research here and there are claims that acetylaldehydes is the cause of it. From what I've read a very violent boil (without lid) and secondary fermentation should remove a lot of it. I don't typically second …