A Bath Chap is a particular cut of pork chop made in Wiltshire and Somerset in southern England.
It is a 14 to 21 oz (400 to 600g) piece of pork, whose shape is somewhat like a cone cut in half through the top.
It is cut from the lower portion of a cheek of a pig.
You can buy them raw at some butchers, but they are usually sold prepared and cooked. The meat is boned, and brined (they used to be dried as well.) The cone shape comes from a special mould that the boned, brined cheeks are pressed into. They're left in the moulds for a while, then removed, whereupon they retain their shape, and then they are dusted with bread-crumbs, ready for slow cooking until the meat is tender.
When the prepared Bath Chap is cut into, you see streaks of white fat and pinkish lean meat. It tastes a bit like a ham from the brining.
Some are sold now already breaded and cooked. These can be served cold, as you would ham.
The breed almost died out.
The pigs were allowed in the fall to eat the fallen fruit in apple orchards, which made the flesh sweet.
Sometimes, "Bath Chap" was used to refer to just a raw, unprocessed pig's cheek, as in Mrs Beeton's advice: "A pig's cheek, or Bath chap, will take about 2 hours after the water boils."
They may be referred to also just as "chaps".