Chocolate Sour Cream Pound Cake
["1 c. softened butter or margarine", "2 c. sugar", "1 c. firmly packed brown sugar", "6 eggs", "2 1/2 c. all-purpose flour", "1/4 tsp. baking soda", "1/2 c. cocoa", "1 (8 oz.) sour cream", "2 tsp. vanilla extract", "powdered sugar (optional)"]
["Mix butter with mixer until soft and creamy.", "Gradually add sugars.", "Combine", "flour, baking soda and cocoa, beginning and ending with flour mixture.\tStir in vanilla.", "Spoon batter into greased and floured 10-inch tube pan.", "Bake at 325\u00b0 for 1 hour and", "20", "minutes", "or", "until toothpick inserted in center comes out clean.", "Cool", "in", "pan", "on\ta wire 10 to 15 minutes. Remove", "from pan", "and cool completely on wire rack.", "Sprinkle with powdered sugar, if desired.\tYields 1 (10-inch) cake."]
["butter", "sugar", "brown sugar", "eggs", "flour", "baking soda", "cocoa", "sour cream", "vanilla extract", "powdered sugar"]