Chocolate Pie
["3/4 c. sugar", "1/4 c. flour", "1/4 c. cocoa", "1 1/4 c. milk", "3 egg yolks", "dash of salt", "1/2 tsp. vanilla", "2 Tbsp. butter"]
["Mix all ingredients except butter.", "Cook until thick; take off stove.", "Add butter and stir until smooth.", "Pour in pie shell. Beat egg whites.", "Add 6 tablespoons, two at a time.", "Put on pie and brown."]
["sugar", "flour", "cocoa", "milk", "egg yolks", "salt", "vanilla", "butter"]