Lemon Meringue Pie
["1 pie shell, baked", "4 eggs, separated", "1/2 c. sugar for filling", "4 Tbsp. sugar for meringue", "2 Tbsp. flour", "3 Tbsp. water", "1/4 tsp. salt", "1 Tbsp. butter", "4 Tbsp. lemon juice", "2 tsp. lemon rind, grated"]
["Mix 4 egg yolks, 1/2 cup sugar, 2 tablespoons flour, 3 tablespoons water and 1/4 teaspoon salt in top of double boiler. Stir over boiling water until mixture is thick and smooth.", "Add butter, lemon juice and lemon rind.", "Set aside to cool.", "Beat 2 egg whites until stiff and fold in the cooled custard.", "Pour into baked 9 inch pie shell.", "Cover with a meringue made from remaining egg whites, with a few grains of salt, beaten in until frothy. Add 4 tablespoons sugar slowly and a few drops of vanilla until stiff, but not dry.", "Pile on pie.", "Bake at 300\u00b0 for 20 minutes until meringue is golden brown."]
["pie shell", "eggs", "sugar", "sugar", "flour", "water", "salt", "butter", "lemon juice", "lemon rind"]