Chocolate Pie
["1 1/2 c. milk", "3/4 c. sugar", "3 3/4 Tbsp. flour", "4 Tbsp. cocoa", "3 egg yolks, well beaten", "1 tsp. vanilla", "2 Tbsp. butter"]
["Scald milk in top of double boiler.", "Combine sugar, flour and cocoa in a bowl; add enough of hot milk to make paste.", "Return to double boiler and stir until thickened.", "Cover and cook 10 minutes.", "Add small amount of hot mixture to the 3 well beaten egg yolks.", "Mix well and return to boiler.", "Cook 2 minutes, stirring constantly.", "Remove from heat and add vanilla and butter."]
["milk", "sugar", "flour", "cocoa", "egg yolks", "vanilla", "butter"]