A drum partly filled with sodium hydroxide (commonly called lye or caustic soda) and water, used to fully dissolve a human body over a period of several days. Favored by organized crime, warlords and serial killers, for body disposal.
criminal 1: Why you got all of these drums in your garage?
criminal 2: Those are my cold cremators. I dissolve potential snitches and bitchy girlfriends in them.
criminal 1: Cool!