You must have a pint of juice to a pound of sugar.
A few grains of saffron boiled with the jelly will improve the colour without affecting the taste.
Take large juicy ripe peaches; free-stones are the best, as they have a finer flavour than the cling-stones, and are much more manageable both to preserve, and to eat. Pare them, and cut them in half, or in quarters, leaving out the stones, the half of which you must save. To every pound of the peaches allow a pound of loaf-sugar. Powder the sugar, and strew it among your peaches. Cover them and let them stand all night. Crack half the peach-stones, break them up, put them into a small sauce-pan and boil them slowly in as much water as will cover them. Then when the water is well flavoured with the peach-kernels, strain them out, and set the water aside. Take care not to use too much of the kernel-water; a very little will suffice. Put the peaches into a preserving kettle, and boil them in their juice over a quick fire; (adding the kernel-water,) and skimming them all the time. When they are quite clear, which should be in half an hour, take them off, and put them into a tureen. Boil the syrup five minutes longer, and pour it hot over the peaches. When they are cool, put them into glass jars, and tie them up with paper dipped in brandy laid next to them.
Apricots, nectarines, and large plums maybe preserved in the same manner.
Take ripe free-stone peaches; pare, stone, and quarter them. To six pounds of the cut peaches allow three pounds of the best brown sugar. Strew the sugar among the peaches, and set them away. Next morning add a handful of peach leaves, put the whole into a preserving kettle, and boil it slowly about an hour and three quarters, or two hours, skimming it well. When cold, put it up in jars and keep it for pies, or for any common purpose.
Take large white or yellow free-stone peaches, the finest you can procure. They must not be too ripe. Rub off the down with a flannel, score them down the seam with a large needle, and prick every peach to the stone in several places. Scald them with boiling water, and let them remain in the water till it becomes cold, keeping them well covered. Repeat the scalding three times: it is to make them white. Then wipe them, and spread them on a soft table-cloth, covering them over with several folds. Let them remain in the cloth to dry. Afterwards put them into a tureen, or a large jar, and pour on as much white French brandy as will cover them well. Carefully keep the air from them, and let them remain in the brandy for a week. Then make a syrup in the usual manner, allowing to each pound of peaches a pound of loaf-sugar and half a pint of water mixed with a very little beaten white of egg; one white to three or four pounds of sugar.
When the syrup has boiled, and been well skimmed, put in the peaches and boil them slowly till they look clear; but do not keep them boiling more than half an hour. Then take them out, drain them, and put them into large glass jars. Mix the syrup, when it is cold, with the brandy in which you had the peaches, and pour it over them. Instead of scalding the peaches to whiten them, you may lay them for an hour in sufficient cold weak lye to cover them well. Turn them frequently while in the lye, and wipe them dry afterwards.