Originally Posted by Joseph524
I am wondering about krausen with all grain BIAB. I have been doing extract for a couple years. Switched to BIAB this year. I read about a lot of people using blow off tube and such. Since I have been doing BIAB my beers have been better. But a lot less krausen maybe an inch but not much more. Less then the extract brews. Everything ferments to spec gravity wise. Big brew 8% or 5% all the same. Is this common?
I don't know the answer to your question. If your beer tastes good and attenuates appropriately for the type of beer you are making, I don't think it should be a concern.
Maybe the difference you are noticing is because the the wort make up of an all grain brew vs an extract brew. Anecdotaly, I think I get messier/bigger krausens when I get a lot of trub in the fermenter. So, maybe your brew in bag is filtering a lot of that trub out -- I don't know.