Originally Posted by Nurmey
Carboy caps all the way baby! I never use a bung if I can use a cap instead.
Not sure about the size for a beer bottle. Do they make sizes for beer bottles?
Oh, yes! The beer bottle size fits wine bottles, too, but they have two big of a hole (for the airlock) for me to see the number on it. Those are the size you use for the BMBF, and are PROBABLY around a #3. Might be a #4, though. You'd have to go to the store and see how it looked next to a bottle.