I have a free Mr. Beer fermenter and I'd like to use it so it doesn't sit around collecting dust. Does BIAB scale down to 2 gallon batches well? I've never done a BIAB and I'd like to try something a bit darker like a porter if possible, but I'm kind of afraid the lid on the fermenter is going to get clogged with krausen and I'll have a stouty explosion haha. Has anybody tried this?