Lemon Meringue Pie
["1 1/2 c. sugar", "1/3 c. plus 1 Tbsp. cornstarch", "1 1/2 c. water", "3 egg yolks, slightly beaten", "3 Tbsp. margarine", "2 tsp. grated lemon peel", "1/2 c. lemon juice", "1 (9-inch) pie shell", "meringue for 9-inch pie"]
["Bake pie shell in 400\u00b0 oven.", "Mix sugar and cornstarch in 1 1/2-quart saucepan.", "Stir in water gradually.", "Cook over medium heat, stirring constantly, until mixture thickens and boils; boil and stir 1 minute.", "Add the beaten egg yolk to hot mixture; boil 1 minute.", "Remove from heat; add margarine, lemon juice and food coloring (optional).", "Pour into pie shell.", "Spoon meringue over hot pie filling, carefully sealing meringue to edge of crust.", "Bake until brown."]
["sugar", "cornstarch", "water", "egg yolks", "margarine", "lemon juice", "pie shell", "meringue"]