I morbidly re-opened the book, and now they're feeding the knights as best they can...which is meat stew. Where did the meat come from? Hell if I know; the horse is still alive.

Mind you, at this point given that the House of Extreme Poverty has separate living room, kitchen, and (one assumes, though these aren't mentioned) bedrooms, I'm going to wager that mom had some stew meat in the freezer for a special occasion.