A quarter of a pound of finely powdered loaf-sugar, of the whitest and best quality, is the usual allowance to one white of egg. For the cake in the preceding receipt, three quarters of a pound of sugar and the whites of three eggs will be about the proper quantity. Beat the white of egg by itself till it stands alone. Have ready the powdered sugar, and then beat it hard into the white of egg, till it becomes thick and smooth; flavouring it as you proceed with a few drops of oil of lemon, or a little extract of roses. Spread it evenly over the cake with a broad knife or a feather; if you find it too thin, beat in a little more powdered sugar. Cover with it thickly the top and sides of the cake, taking care not to have it rough and streaky. To ice well requires skill and practice. When the icing is about half dry, put on the ornaments. You may flower it with coloured sugar-sand or nonparels; but a newer and more elegant mode is to decorate it with, devices and borders in white sugar; they can be procured at the confectioners, and look extremely well on icing that has been tinted with pink by the addition of a little cochineal.
You may colour icing of a pale or deep yellow, by rubbing the lumps of loaf-sugar (before they are powdered) upon the outside of a large lemon or orange. This will also flavour it finely.
Almond icing, for a very fine cake, is made by mixing gradually with the white of egg and. sugar, some almonds, half bitter and half sweet, that have been pounded in a mortar with rose water to a smooth paste. The whole must be well incorporated, and spread over the cake near half an inch thick. It must be set in a cool oven to dry, and then taken out and covered with a smooth plain icing of sugar and white of egg.
Whatever icing is left, may be used to make maccaroons or kisses.
Prepare a table-spoonful of powdered cinnamon, a tea-spoonful of powdered mace, and two nutmegs grated or powdered. Mix together in a tumbler, a glass of white—wine, a glass of brandy, and a glass of rose water. Sift a pound of the finest flour into a broad pan, and powder a pound of loaf-sugar. Put the sugar into a deep pan, and cut up in it a pound of fresh butter. Warm them by the fire till soft; and then stir them to a cream. When they are perfectly light, add gradually the spice and liquor, a little at a time. Beat ten eggs as light as possible, and stir them by degrees into the mixture, alternately with the flour. Then add twelve drops of oil of lemon; or more, if it is not strong. Stir the whole very hard; put it into a deep tin pan with straight or upright sides, and bake it in a moderate oven from two to three hours. If baked in a Dutch oven, take off the lid when you have ascertained that the cake is quite done, and let it remain in the oven to cool gradually. If any part is burnt, scrape it off as soon as cold.
It may be iced either warm or cool; first dredging the cake with flour and then wiping it off. It will be best to put on two coats of icing; the second coat not till the first is entirely dry. Flavour the icing with essence of lemon, or with extract of roses.
This cake will be very delicate if made with a pound of rice flour instead of wheat.