Preheat oven to 350 degrees. Grease and flour a 10" tube pan. With an electric mixer, cream butter and shortening together until combined. Add sugar and beat 1 minute. Add adds, one at a time, and mix after each addition. Add vanilla and mix. Mix dry ingredients together and add to mixture alternately with milk, starting with flour and ending with flour Pour into grased and floured tube pan and bake 1½ hours or until a tester inserted in the center of the cake comes out clean.
Recipe by Baking and Eggs at https://bakingandeggs.com/2016/05/16/pound-cake/