Moist Chocolate Cake

Directions

1. Mix well.
2. Cream the butter, add the sugar.
3. Add the egg yolks, slightly beaten, and the potato.
4. Stir, add the chocolate, milk and then all the dry ingredients which have been mixed and sifted together.
5. Fold in the white of the eggs beaten stiffly.
6. Add the vanilla.
7. Pour into two layer-cake pans which have been prepared with waxed paper.
8. Bake in a moderate oven for thirty minutes.
9. Ice with white mountain cream icing.