1/3 c. shortening
1 c. sugar
2 egg yolks
4 tbsp. cocoa
1 tsp. baking soda
1 tsp. baking powder
2 c. flour
1 c. milk with 1 tbsp. vinegar
1 tsp. vanilla

Cream shortening and sugar; add egg yolks and vanilla. Mix well. Mix dry ingredients and add to creamed mixture alternately with milk, blend well. Drop by rounded teaspoons onto greased cookie sheet. Bake at 350 degrees for 20 minutes. Cool.

FILLING:

2 c. confectioners' sugar
1/2 c. shortening
2 egg whites, slightly beaten
1 tsp. vanilla
Pinch of salt