Flank Steak with beef

1 1/2 pounds beef, flank steak 1 x salt and black pepper to taste * 2 tablespoons butter, unsalted 2 tablespoons butter softened 2 tablespoons scallions,[...]

1 lb linguine 1 lb flank steak, cut across the grain in thin 1/4 inch thick slices 1 tablespoon cornstarch 1 tablespoon dry sherry 1 pinch sugar 1 tablespoon[...]