Plain Boiled Icing Recipe ingredients

• ¼ cup Karo, Red Label
• 1 cup granulated sugar
• ½ cup boiling water
• Few grains cream of tartar
• ¼ teaspoon desired flavoring

To prepare this Plain Boiled Icing Recipe, first combine all the ingredients except flavoring, and boil until the mixture threads, 238 degrees F. Cool till tepid, flavor, heat until creamy and spread on the cake, using a knife which has been dipped in boiling water.