I brewed an american brown ale about two weeks ago and noticed it had a very small amount of krausen. This past weekend I brewed a russian imperial stout (1.095) and pitched it on to the yeast cake of dennys fav 50 that I had used for the brown ale. Because of the high gravity and the amount of yeast I put on a blow off tube expecting a lot of activity. To my surprise after 4 day in primary there is definitely activity but only about a half inch of krausen. Is this typical with this strain?
Typical? Not really. A problem? I really doubt it.
Did you use fermcap in the boil kettle?
I find that if I use fermcap in the boil kettle, I typically see less krausen in the fermenter then when I do not use fermcap in the boil kettle.
