LEMON PIE (SUPERIOR)

Put the water and butter into a double boiler and set on the range. Mix the sugar, flour, and corn starch together; grate in the lemon rind, add the juice and beaten yolks of the eggs. When the water in the boiler is scalding hot, stir in the mixture, and cook till of the consistency of cold honey, stirring now and then to ensure even cooking. Remove from the fire; when cool, pour into deep pie tins, lined with good pastry. When done, meringue with the whites of the eggs.