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

Mix dry ingredients. Stir in mayonnaise. Stir in water and vanilla until smooth or blended. Bake at 350 degrees for 30 minutes or until done.