“Ever eaten scubbo? No? Nothing like a bowl of scubbo when you’re hungry. You can put anything in scubbo. Pork, beef, mutton, rabbit, chicken, duck… anything. Even rats, if you’ve got ’em. It’s food for the marching man, scubbo. Got some on the boil out there right now. You can have some of that, if you like.”

The squad brightened up.

Thoundth good,” said Igor. “What’th in it?”

“Boiling water,” said the corporal. “It’s what we call ‘blind scubbo’"

Monstrous Regiment, Terry Pratchett (GNU)