Quote:
Originally Posted by barrog
60F room temp is just about right for an ale although 58 would be better. 62-64 room temp is getting a bit warm. Fermenting temps can be 5deg or more than room temp. Also secondary temps aren't as important as primary.
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Barrog ferments on the cold side in my opinion. If you can monitor the temp of the wort, that's best rather than guessing based on ambient. I keep my fermentatons between 66 and 70 for ales (wort temp). I don't know at what temp fusel production starts but it's higher than that.
Fermenting an ale in the 50s is asking for a slow/stuck fermentation as the yeast flocculate and go dormant before finishing the job. Chris White of White Labs recommends you raise the temp 4-10 degrees after the first 72 hours to encourage full attenuation. Most of the flavor compounds are already made at that point so the increased doesn't cause off flavors.