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Plain Boiled Icing
1/4 cup Karo, Red Label 1 cup granulated sugar 1/2 cup boiling water Few grains cream of tartar 1/4 teaspoon desired flavoring Combine all the ingredients except flavoring, and boil until the mixture threads, 238 degrees F. Cool till tepid, flavor, beat until creamy and spread on the cake, using a knife which has been dipped in boiling water.