Cream Pie
["1/3 c. flour or 1/4 c. cornstarch", "1 c. sugar", "1/4 tsp. salt", "2 c. milk", "3 slightly beaten egg yolks", "2 Tbsp. butter or margarine", "1/2 tsp. vanilla", "1 baked 9-inch pastry shell", "3 stiff beaten egg whites", "6 Tbsp. sugar"]
["Preheat oven at 350\u00b0. Mix flour, 1 cup sugar and salt; gradually add milk. Cook over moderate heat, stirring constantly, until mixture thickens and boils. Cook 2 minutes and remove from heat. Add small amount to egg yolks; stir into remaining hot mixture. Cook 1 minute, stirring constantly. Add butter and vanilla; cool slightly."]
["flour", "sugar", "salt", "milk", "egg yolks", "butter", "vanilla", "pastry shell", "egg whites", "sugar"]