Whoopie Pies (Cookies)
["1 c. shortening", "2 c. sugar", "2 whole eggs, plus 2 egg yolks", "1 c. sour milk", "1 c. hot water", "1 tsp. baking powder", "2 tsp. baking soda", "4 1/2 c. flour", "1 c. cocoa", "1/2 tsp. salt", "2 tsp. vanilla"]
["Mix all these ingredients together and drop by spoonful onto a greased cookie sheet.", "Make round and flat.", "Bake at 350\u00b0 for 10 minutes."]
["shortening", "sugar", "eggs", "sour milk", "water", "baking powder", "baking soda", "flour", "cocoa", "salt", "vanilla"]