Wikia

"There was no food as yet on the glittering golden plates, but small menus were lying in front of each of them. Harry picked his up uncertainly and looked around - there were no waiters. Dumbledore, however, looked carefully down at his own menu, then said very clearly to his plate, "Pork chops!""

—Description.^[src]

A pork chop is a cut of pork (meat from a pig) from the loin, cut perpedicularly to the spine.