frieda's whoppie pie

Ingredients

• 1 cup shortening, or two sticks margarine
• 2 - eggs, beaten
• 2 cups sugar
• 1 cup sour milk, add 1 tbsp of vinegar to milk to make it sour, let it sit awhile
• 2 teaspoons vanilla
• 1 cup cocoa
• 4 cups flour
• 2 teaspoons salt
• 2 teaspoons baking soda, dissolve baking soda in hot water
• 1 cup hot water
• WHOOPIE FILLING
• 1 cup white shortening (crisco)
• 4 cups confectioners' sugar
• 2 cups marshmallow cream (fluff)