Pennsylvania Dutch Beef With Onions
1½ lbs. boiled beef
2 tablespoons butter
1 tablespoon vinegar
1 onion
2 tablespoons flour
1 pinch of pepper
½ cup meat stock salt
Mince the onion. Simmer in butter until soft. Add flour and simmer until brown. To this add vinegar, salt, pepper and meat stock and let come to a boil. Cut the meat in slices and serve hot, with the onion sauce.