Minute Fudge Icing
["2 oz. chocolate squares, cut fine", "1 1/2 cups sugar", "7 Tbsp. milk", "2 Tbsp. shortening", "2 Tbsp. butter", "1 Tbsp. corn syrup", "1/4 tsp. salt", "1 tsp. vanilla, after cooking"]
["Mix above and bring to boil. Boil 1 minute. Cool to lukewarm. Add vanilla. Beat till thick enough to spread."]
["chocolate squares", "sugar", "milk", "shortening", "butter", "corn syrup", "salt", "vanilla"]