2 c. flour
1 c. sugar
2 tsp. baking soda
1 tsp. baking powder
2 tbsp. cocoa
1 c. warm water
1 tsp. vanilla
1 c. mayonnaise
Pinch of salt

Sift dry ingredients together and add water and vanilla. Fold in mayonnaise and pour into two 9 inch layer cake pans or a 13x9x2 inch oblong pan (greased and lightly floured). Bake at 350 degrees for 20-35 minutes.