Chocolate Pie
["4 egg yolks", "2 c. sugar", "6 Tbsp. cocoa", "4 Tbsp. flour", "2 c. milk", "2 Tbsp. vanilla", "1 stick butter or margarine"]
["Beat egg yolks; add sugar, cocoa, flour and vanilla.", "Add milk.", "Mix thoroughly and cook in heavy saucepan.", "While cooking, add butter.", "Stir constantly until thick.", "Pour into two prepared pie shells.", "Top with egg white icing and brown.", "Makes two pies."]
["egg yolks", "sugar", "cocoa", "flour", "milk", "vanilla", "butter"]