Olive sauce

(Contributed)

Make a brown sauce as follows: Put four tablespoonfuls of butter into a saucepan; when hot add four and a half tablespoonfuls of flour and stir until very brown; add two cupfuls of brown stock and salt and pepper to taste. Remove the stones from five olives and boil for five minutes in water to which one tablespoonful of vinegar has been added. Drain and mince and add to the sauce.