Originally Posted by chungking
Good question about re-aerating after letting it sit over night. I probably would.
Does it do any harm leaving it to cool over night? Everything I have read suggests cooling as fast as possible and pitching ASAP.
Reaerating won't hurt the beer, but i don't think it's really a must. The oxygen comes out of the wort during the boil, but just sitting around you shouldn't lose too much.
As for the slow cool, there can be a couple of problems, but there are a ton of people prefer "no-chill" brewing, and after all, people have been brewing beer for thousands if years without the aid of modern refrigeration.
The problems that can arise from a no chill brew are:
hazy beer, since you don't get the cold break like you would by chilling it quickly. But there are plenty of ways to fix that, my favorite includes drinking the beer from a Stein.
DMS flavor (like cooked corn) because DMS forms at higher temps, it evaporates off while you boil, but then sitting at high temps more of it forms. Since you got your beer down to 100 fairly quickly i don't think that will be a problem. Also, I'm not an expert, but i think a longer boil could help fix this problem too (if you do notice any).
but the biggest concern is getting an infection while it's sitting at prime bacteria growing temps, and without yeasties to fight off any ambitious bacteria. But with good sanitation, you'll be fine on that front too.
Sounds like a good brew weekend too me though. Congrats.