preheat oven to 325°F

grease and flour a tube pan

cream shortening and butter together

gradually add sugar; continue creaming until light and fluffy

add eggs 1 at a time beating well after each addition

combine (sift together) flour, baking powder, salt and cocoa

add to creamed mixture alternately with milk, beginning and ending with flour

stir in vanilla

pour into greased & floured tube pan

bake at 325°F for 1 hour and 15 minutes

cool on wire rack for 10 to 15 minutes

invert onto wire rack to remove