The recipe calls for 10 days fermentaion. Mine had a vigerous fermentaion, but slowed down. It is now at day 16 and still producing 1 bubble every 6 minutes (It smelled like sulpher at first, but smells great now). I know that the best way to tell if a fermentaion is done is to check the gravity, but common sense is telling me that it is not done. Perhaps is some of the sugar supposed to be retained for flavor by arresting the fermentaion by crash cooling early?
Should I let it go, or should I stop it?