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

Sift dry ingredients 3 times. Add mayonnaise; mix and add hot water. Mix well and bake in greased and floured pan at 350 degrees for 30 minutes.