Chocolate Pound Cake
["1 1/2 c. butter, softened", "3 c. sugar", "2 1/2 tsp. vanilla", "5 eggs", "2 1/2 c. all-purpose flour", "1 c. unsweetened cocoa", "2 tsp. baking powder", "1 tsp. salt", "1 1/2 c. sour milk (1 1/2 c. sweet milk with 1 1/2 Tbsp. vinegar)"]
["Cream butter, sugar and vanilla on medium speed for 3 minutes. Add eggs, one at a time.", "Combine dry ingredients and add alternately with milk.", "Grease and flour a tube pan.", "Bake at 325\u00b0 for 1 hour 20 minutes.", "Cool 10 minutes before removing from the pan.", "When cool, drizzle with a mixture of 1 cup confectioners sugar, 1 1/2 teaspoons vanilla or 1 teaspoon rum and 2 to 3 tablespoons hot water.", "(Add water 1 tablespoon at a time until right consistency.)"]
["butter", "sugar", "vanilla", "eggs", "flour", "unsweetened cocoa", "baking powder", "salt", "sour milk"]