1 1/4 c. flour
1 c. sugar
1/2 c. unsweetened cocoa
1/4 c. cornstarch
1/2 tsp. salt
1/2 tsp. baking soda
4 egg whites
1 c. water
1/2 c. Karo light or dark corn syrup

Preheat oven to 350 degrees. Spray 9 inch square baking pan with cooking spray. In large bowl combine dry ingredients until well mixed. In medium bowl whisk egg whites, water and corn syrup. Stir into dry ingredients until smooth. Pour into prepared pan and bake 30 minutes or until cake springs back when lightly touched. Cool on wire rack 10 minutes. Makes 16 servings. 0 gr fat. 0 gr cholesterol, 130 calories.

With my oven it takes almost 40 minutes, since all ovens are different start checking after about 25 minutes.