1. Preheat oven to 350 degrees F. 2. With a mixer, cream butter and shortening together. 3. Add sugar, a little at a time. Add eggs, 1 at a time, beating after each addition. 4. Stir dry ingredients together in a bowl and add to mixer alternately with milk, starting with the flour and ending with the flour. 5. Mix in vanilla. 6. Pour into a greased and floured tube pan and bake for 1 to 1 1/2 hours. 7. Cool and demould , roll the fondant to 1 inch thickness and spread over the cake , sprinkle crystals of pink salt on top