Chocolate Pie
["1 c. sugar", "3 heaping Tbsp. Hershey's cocoa", "3 heaping Tbsp. flour", "pinch of salt", "3 egg yolks", "1 tsp. vanilla", "2 c. milk", "pat of butter"]
["Mix flour, cocoa, sugar and salt, then add egg yolks and milk. Cook until thick, stirring constantly.", "Remove from heat.", "Add vanilla and small pat of butter, if desired.", "Pour filling into crust and add meringue.", "Brown in moderate oven."]
["sugar", "cocoa", "flour", "salt", "egg yolks", "vanilla", "milk", "butter"]