1 c. shortening
2 c. sugar
2 egg yolks
2 whole eggs
1 c. cocoa
1/2 tsp. salt
4 c. flour
2 tsp. vanilla
1 c. sour milk
1 c. hot water
2 tsp. baking soda

Mix first 4 ingredients; add dry ingredients and liquid. Drop by spoonful on cookie sheet. Bake at 450 degrees for 5 minutes.

FILLING:

2 unbeaten egg whites
1 tsp. vanilla
4 tsp. flour
2 tsp. powdered sugar
4 tsp. milk
1/2 c. shortening
1 box powdered sugar

Beat first 6 ingredients until smooth and fluffy. Then add box of powdered sugar and beat. Spread between cookies.