Chocolate Pie
["3 egg yolks, beaten well", "1 small can evaporated milk", "2/3 c. homogenized milk", "2 level Tbsp. flour", "1 c. sugar", "3 Tbsp. cocoa", "2 Tbsp. butter or margarine, melted", "1 baked (9-inch) pie shell"]
["Mix flour, sugar and cocoa together in a saucepan.", "Add other ingredients", "and cook, stirring constantly, over medium heat until thick enough to make rings when stirred.", "Pour into the", "baked pie", "shell and cool.", "Top with meringue or whipped cream before serving."]
["egg yolks", "milk", "homogenized milk", "level", "sugar", "cocoa", "butter", "shell"]