I know RFK is trying to move from seed oil to beef tallow for frying food but the Bible says not to eat the fat from cattle, sheep, and goats. Maybe restaurants should just air fry everything.
It was only for cattle, sheep, and goats: the clean animals. Why not say fat in general then?
It's not punishable by death or anything. It's to distinguish the uncommon from the common, the clean and the unclean.
The tallow is distinct from the fat mixed in with the meat of the animal. This Jew explains it well.