2 c. granulated sugar
1 c. cocoa
2 eggs
1 c. (2 sticks) butter
1 c. sour milk*
1 c. hot water
2 tsp. vanilla
4 c. all-purpose flour
2 tsp. salt
2 tsp. baking soda

Cream together granulated sugar, cocoa, eggs and butter. Add sour milk, water vanilla, flour, salt and soda. Drop by teaspoonfuls onto greased cookie sheet. Bake at 350°F for about 10 minutes. Remove and cool.

FILLING:

2 egg whites
2 tbsp. all-purpose flour
4 tbsp. milk
1 tsp. vanilla
4 c. powdered sugar
1 1/2 c. Crisco

Beat egg whites; add flour, milk, vanilla, powdered sugar and Crisco. Beat well until smooth and creamy.

Place filling between two cookies. Repeat.

Note: To make sour milk, add 1 tablespoon vinegar to regular milk and let stand 5 minutes.