So I did my first legit brew on Saturday. And I had could get it to boil, but I never really got a rolling boil like I wanted. So occasionally I would put the lid on (i know this is not what you're suppose to do, so I only did it brielfly and would wipe the lid off to get all the nasties on there).
My question is, that, I noticed the lid would collect all sorts of junk, green stuff mostly. Now since it got up there without boiling over, is this stuff floating up out of the pot? Is my kitchen ceiling going to turn green? I dont have a range hood or anything.