1 pkg. (18.5 oz.) chocolate cake mix with pudding in mix
1/2 c. Hershey's cocoa
3 eggs
1 c. Hellmann's mayonnaise
1 1/3 c. water

ULTIMATE CHOCOLATE FROSTING:

6 tbsp. butter
3 1/2 c. confectioners' sugar
3/4 c. cocoa
1 tsp. vanilla
6-7 tbsp. milk

Grease and flour 2 or 3 (9 inch) layer cake pans.

In large bowl with mixer on low speed beat together cake mix and cocoa. Add remaining ingredients; beat just until blended. Beat at high speed (portable mixer) 2 minutes. Pour into pans. Bake in 350 degree oven for 30 minutes or until done.

Frosting: Beat butter in small bowl to soften. Add cocoa/confectioners' sugar alternately with milk. Beat until of spreading consistency. Add vanilla.