1 1/2 c. butter, softened
3 c. sugar
5 eggs
3 c. all-purpose flour
1/2 c. cocoa
1 tsp. baking soda
1/4 tsp. salt
1 (8 oz.) carton sour cream
1 c. boiling water
2 tsp. vanilla extract

Cream butter, gradually add sugar, beating well. Add eggs, 1 at a time beating well after each addition. Combine flour, cocoa, soda, and salt; add to creamed mixture alternately with sour cream, beginning and ending with flour mixture. Mix well after each addition. Add vanilla. Pour into 10 inch tube pan. Bake at 325 degrees for 1 hour and 20 minutes. Cool 10 to 15 minutes.