Chocolate Whoopie Pies

1-1/2 cup oil
3 c. sugar
3 eggs
1-1/2 cup sour milk-(add 1-2 T. vinegar or lemon juice to regular milk)
1-1/2 T. vinegar
1 T. vanilla
1-1/2 cup cocoa
1 T. salt
1-1/2 cup hot water
7-1/2 cup flour
1 T. soda

Mix together vinegar and milk; let set.
Mix soda in water.
Mix everything together, adding flour last.
Bake at 350 for 10 min.
Sandwich 2 cookies with whoopee pie filling between them.

Icing:
2 egg whites
2 T. vanilla
2 T. flour
2 T. milk
4 cups powdered sugar
1/2 cup Crisco

Beat egg whites until stiff.
Add rest of ingredients.

(Taken from 'Simply Wonderful-submitted by Verna Stoltzfus)