1 1/2 c. shortening
3 c. sugar
3 eggs
1 1/2 c. sour milk
3 tsp. vanilla
1 1/2 c. cocoa
1/3 tsp. salt
3 tsp. baking soda
1 1/2 c. hot water

FILLING:

3 egg whites, beaten stiff
3 tsp. vanilla
6 tsp. milk
4-6 c. powdered sugar
1 1/2 c. shortening

Spoon cookie batter on greased cookie sheets. Bake 5 minutes at 400 degrees. After cookies have cooled completely put generous amount of frosting between 2 cookies.