Chocolate Pie
["2 Tbsp. cocoa", "1 Tbsp. flour", "1 c. sugar", "3 egg yolks", "1 c. milk", "1/2 stick butter", "1 baked pie shell"]
["Mix cocoa, flour and sugar.", "Add egg yolks, milk and butter. Cook until thick.", "Put in baked pie shell."]
["cocoa", "flour", "sugar", "egg yolks", "milk", "butter", "shell"]