Maybe I'm the only one to grasp this, but you don't want to eat haggis. Not even the vegetarian kind. Nor do you want to eat sausage, which is made up of all the parts of the animal you can't sell. Or chitlins, or frogs legs, or snails, or kidney anything. These aren't foods you want to eat, they're foods eaten by people who can't afford any good cuts of meat. The only reason other people eat them is because if they didn't, they'd have to admit that their ancestors were too poor to eat any decent food.
Intestines. Ugh.
Intestines. Ugh.