Wash and soak the apricots. Steam until soft. Mash the apricots, or press through a coarse strainer or colander; add the sugar. Beat the whites of eggs until very stiff; fold them into the apricots and sugar mixture. Chill and serve with Custard Sauce.
Dried prunes may be substituted for apricots, using less sugar and adding a little lemon juice.
If it is desired to make Apricot Dainty some time before serving, it should be stiffened with gelatine. To do this, mix 1/2 tablespoonful of granulated or powdered gelatine with 2 tablespoonfuls of cold water. Add the gelatine mixture to the hot mashed or strained apricots, stir until the gelatine is dissolved, then proceed to add the sugar and egg white as directed above.