Ingredients : 1/2 Lb. Top round steak 2 Tb Sherry 2 Tb Cornstarch 2 Egg whites 6 Tb Peanut oil SAUCE: 1 1/2 cups Beef stock 2 Tb Light soy sauce 1 Ts Sugar 1 1/2 Tb Cornstarch 1 Ts Red wine vinegar