Roast Beef Hash

The word “hash” comes from the French hacher, which means “to chop.” Curiously, though, the French do not make hash as we know it: the dish seems to have developed in countries where beef and leftover potatoes were plentiful. Ireland comes to mind.

Whatever. It all starts with a boiled potato. The best potatoes for hash are the floury kind suitable for mashing, like russets from Idaho and Maine. To cook them, cut in half and cover them with water in a medium saucepan. Bring t