"line it with aluminum foil"

Well actually, when the shit hits the fan, we won't be able to get foil, so you can substitute the stomach - opened out - or freshly stripped hide of an animal or annoying close minded bigoted Mudcatter passing by. The first batch will be a little contaminated what with the blood and all, so perhaps you can just use that batch for soup - it should be fine after a light rinse out for making tea....