1 c. butter, softened
2 c. sugar
6 large eggs
1/2 tsp. baking soda
1 8 oz. sour cream
1 c. brown sugar
2 1/2 c. all purpose flour
1/2 c. cocoa
2 tsp. vanilla

Beat batter at medium speed about 2 minutes or until soft and creamy. Add sugar, beating at medium speed 5 to 7 minutes. Add eggs one at a time. Beat until yellow disappears. Combine flour, baking soda and cocoa. Add to cream mixture. Stir in vanilla.

Bake in tube pan at 325°F for 1 hour and 20 minutes.