Take ten pounds of ripe yellow quinces; and having washed them clean, pare and core them, and cut them into small pieces. To each pound of the cut quinces allow half a pound of powdered loaf-sugar. Put the parings and cores into a kettle with water enough to cover them, and boil them slowly till they are all to pieces, and quite soft. Then having put the quinces with the sugar into a porcelain preserving kettle, strain over them, through a cloth, the liquid from the parings and cores. Add a little cochineal powdered, and sifted through thin muslin. Boil the whole over a quick fire till it becomes a thick smooth mass, keeping it covered except when you are skimming it; and always after skimming, stir it up well from the bottom.
When cold, put it up in glass jars. If you wish to use it soon, put it warm into moulds, and when it is cold, set the moulds in luke-warm water, and the marmalade will turn out easily.