Butterscotch Frosting
["2 c. light brown sugar, firmly packed", "1 c. granulated sugar", "2 Tbsp. light corn syrup", "3/4 c. milk", "1/4 c. solid Crisco", "1/4 c. butter or margarine", "1/4 tsp. salt"]
["In a saucepan, mix well all ingredients.", "Bring slowly to a full, rolling boil, stirring constantly.", "Boil briskly for 2 minutes.", "(Boil 2 1/2 minutes on a rainy day.)", "Cool to lukewarm. Add 1 teaspoon vanilla.", "Beat until creamy and thick enough to spread.", "Yields frosting for tops and sides of 2 (9-inch) layers."]
["light brown sugar", "sugar", "light corn syrup", "milk", "solid Crisco", "butter", "salt"]