1 cup white sugar
1/2 cup light corn syrup
1 cup buttermilk
1/2 cup water
3 egg whites
3/4 cup butter, melted
1 cup confectioners' sugar
Preheat oven to 350 degrees F (175 degrees C).
In a medium bowl, whip the 1 cup sugar and corn syrup until smooth. Blend in the buttermilk and water. Stir in egg whites until just before baking. Cool on wire racks.
To make the Cool Whip: In a double boiler, combine the cooled buttermilk mixture with the butter or margarine, confectioners' sugar, and vanilla.