Lemon Pie
["2 tsp. cornstarch", "3/4 c. sugar", "1 c. boiling water", "1/4 c. lemon juice", "1 tsp. margarine", "2 egg yolks", "pinch of salt"]
["Combine sugar, cornstarch and water in top of double boiler. Stir constantly, cook until thick and smooth.", "Add egg yolks, butter, salt and lemon juice. Cook 2 minutes.", "Pour into one 9-inch pie shell and top with meringue."]
["cornstarch", "sugar", "boiling water", "lemon juice", "margarine", "egg yolks", "salt"]