Chocolate Pie
["1/3 c. cocoa", "1 1/2 c. sugar", "1/3 c. flour", "3 egg yolks", "2 c. milk", "3/4 tsp. salt", "1 tsp. vanilla"]
["Mix and sift cocoa, flour, salt and sugar. Add unbeaten egg yolks and milk; stir well. Cook until thick. Add vanilla. Pour into baked crust. Cover with whipped cream."]
["cocoa", "sugar", "flour", "egg yolks", "milk", "salt", "vanilla"]