Pineapple Cake

Directions

1. 1
   Cream butter and shortening; add sugar and beat well.
2. 2
   Add egg yolks.
3. 3
   Combine flour, soda and salt.
4. 4
   Add to creamed mixture alternately with buttermilk.
5. 5
   Blend in vanilla.
6. 6
   Fold in the stiffly beaten egg whites.
7. 7
   Pour batter into four greased and floured 9-inch cake pans.
8. 8
   Bake at 350° for 25 minutes.
9. 9
   Cool and frost.