2 c. unsifted flour
2/3 c. unsweetened cocoa
1 1/4 tsp. baking soda
1/4 tsp. baking powder
3 eggs
1 2/3 c. sugar
1 tsp. vanilla
1 c. real mayonnaise
1 1/3 c. water

Use two 9-inch round cake pans, greased and floured. Preheat oven to 350 degrees.

In medium bowl, stir flour, cocoa, baking soda and baking powder together; set aside.