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

Sift together all dry flour, cocoa, sugar and baking soda. Then add mayonnaise, water and vanilla. Bake in 9x13 pan at 350 degrees for 40-45 minutes (glass pan 325 degrees for 40 minutes). Check middle with toothpick. The best chocolate cake.