"The wine builds up pressure as it ferments ? I would think there's probably all sorts of safe-guards around that stuff."
Yes there are safeguards.? Fermentation locks, basically the miniature equivalent of a plumbing P trap -- they allow gasses to escape, but keep oxygen and undesirable microbes out.? We have a lot of them.
Regarding pressure cooker gaskets, they are not round (or flat).? They have a "vee" shape.? I wish they WERE round or flat, because that "vee" is difficult to clean.? I don't like to throw stuff like that in a dishwasher because the detergent can be pretty aggressive toward some materials, and don't know if the gasket material is dishwasher safe or not.
