White Wine whey.
Put half a pint of new milk on the fire; the moment it boils up, pour in as much sound raisin wine as will completely turn it, and it looks clear; let it boil up, then set the saucepan aside till the curd subsides, and do not stir it. Pour the whey off, and add to it half a pint of boiling water, and a bit of white sugar. Thus you will have a whey perfectly cleared of milky particles, and as weak as you choose to make it.