Chocolate Pie
["3 Tbsp. cocoa", "1 c. sugar", "3 Tbsp. flour", "1 c. milk", "2 Tbsp. margarine", "1 tsp. vanilla", "3 egg yolks"]
["Mix all together.", "Cook until thick.", "Pour into baked pie shell."]
["cocoa", "sugar", "flour", "milk", "margarine", "vanilla", "egg yolks"]