Chocolate Pie
["4 Tbsp. flour", "1 c. sugar", "4 Tbsp. cocoa", "1/4 tsp. salt", "2 c. whole milk", "4 egg yolks", "2 Tbsp. butter", "1 baked pie crust"]
["Mix salt, sifted flour, sugar and cocoa.", "Pour milk into saucepan and add sifted flour mixture.", "Stir over heat until very warm.", "Add well beaten egg yolks.", "Cook until thick, stirring often.", "Remove from heat and add butter and vanilla."]
["flour", "sugar", "cocoa", "salt", "milk", "egg yolks", "butter", "crust"]