White Buttermilk Sheet Cake

Directions

1. 1
   Cream sugar and shortening.
2. 2
   Add vanilla and then salt.
3. 3
   Add egg whites one at a time, beating after each one.
4. 4
   Beat in 2 tablespoons flour.
5. 5
   Add 3/4 cup buttermilk with baking soda added. Add remaining flour and buttermilk alternately.
6. 6
   Bake at 350° for 25 to 30 minutes in 10 x 15-inch sheet cake pan that has been greased and floured.
7. 7
   Cool and frost with buttercream frosting.