Aunt Sylvia'S Chocolate Sauce
["3 sq. unsweetened chocolate", "1 1/2 c. sugar", "pinch of salt", "1/16 tsp. cream of tartar", "1 can evaporated milk"]
["Bring to a boil and boil one minute.", "Stir continuously.", "Beat it off the stove one more minute.", "Add 1 teaspoon vanilla."]
["unsweetened chocolate", "sugar", "salt", "cream of tartar", "milk"]