3 cups all-purpose flour
1/2 teaspoon baking powder
1/2 teaspoon salt
1/2 cup unsweetened cocoa powder
1 cup butter, softened
1/2 cup shortening
3 cups white sugar
1 teaspoon vanilla extract
1 cup milk
Preheat oven to 165 degrees C. Grease and flour a 10 inch Bundt pan. Sift flour, baking powder, salt and cocoa. Set aside.
In a large bowl, cream butter, shortening, sugar, and vanilla until light and fluffy. Add eggs one at a time, beating well after each. Add flour mixture alternately with the milk. Mix well.
Pour into 10 inch Bundt pan. Bake at 165 degrees C for 70 minutes or until a toothpick inserted into cake comes out clean. Let cool for 10 minutes in the pan, then turn out onto a wire rack and cool completely.