Chocolate Pie
["2/3 cup sugar", "3 Tbsp. cocoa", "2 cups milk", "3 Tbsp. flour or cornstarch", "1 tsp. vanilla", "3 egg yolks, beaten", "1 Tbsp. butter", "Baked pie shell"]
["Mix dry ingredients.", "Add milk, cook, stirring until thickened.", "Add small portion into eggs; blend well.", "Pour egg mixture into hot mixture.", "Cook, stirring until thickened.", "Remove from heat; add vanilla and butter.", "Pour into baked pie shell. Top with meringue or whipped topping."]
["sugar", "cocoa", "milk", "flour", "vanilla", "egg yolks", "butter", "pie shell"]