Usually the thymus.Sometimes the pancreas, and various other glands are also called “sweetbreads”, but there’s usually a location identifier in front if it’s not the thymus (“belly sweetbreads”, “cheek sweetbreads”, etc.).
the zombeefs in the closet
calling animal guts ‘sweet breads’is the same misnomer as calling people who empty outhouses ‘honey dippers’
Organ Music playing whilst eating Sweetbreads?
Ah, green men with baggy eyes and ratty clothing: the most tasteful-looking zombies.
Hmm, in the UK Sweetbreads are the Gonads!