Lemon Meringue Pie
["1 c. sugar", "1/4 c. cornstarch", "1 1/2 c. cold water", "3 egg yolks, slightly beaten", "1/4 c. lemon juice", "1 Tbsp. margarine", "baked pie shell", "3 egg whites", "1 c. sugar"]
["In double boiler, cook 1 cup sugar, cornstarch and cold water until thick.", "Add egg yolks with cooked mixture.", "Remove from heat.", "Stir in lemon juice and margarine.", "Spoon hot filling into baked pie shell."]
["sugar", "cornstarch", "cold water", "egg yolks", "lemon juice", "margarine", "pie shell", "egg whites", "sugar"]