Beat butter and shortening until fluffy. Add sugar slowly until well blended. Add eggs, one at a time and mix well between each egg.

Mix flour, baking powder, salt and cocoa in bowl and mix together.

Turn mixer on slow speed and add flour and milk alternately then add vanilla. Only mix until all is blended together.

Pour into well sprayed tube cake pan or bundt pan.

Put into cold oven. Turn on oven to 350 degrees. Cook for 1 and 1/2 hours then check for doneness. Cool until toothpick comes back clean.