1 c. cold water
1 c. mayonnaise (salad dressing)
1 tsp. vanilla
2 c. flour
1/2 c. sugar
4 tbsp. cocoa
2 tsp. baking soda

Sift dry ingredients in bowl. Add water, mayonnaise and vanilla. Blend and bake at 350 degrees for 30 minutes in an 8 x 8 inch or 13 x 9 x 2 inch pan.