Chocolate Pie
["3 egg yolks", "3/4 c. sugar", "2 1/2 Tbsp. cocoa", "2 Tbsp. butter", "2 1/2 Tbsp. cornstarch", "2/3 c. Pet milk", "1 c. milk"]
["Mix one at a time, in order given.", "Cook on medium heat.", "Stir constantly until thickens.", "Let cool.", "Stir every 5 minutes.", "Pour into cooked crust, or graham cracker crust.", "Top with Cool Whip."]
["egg yolks", "sugar", "cocoa", "butter", "cornstarch", "Pet milk", "milk"]