Put the isinglass into a pint of water, and boil it till it has dissolved. Then strain it into a porcelain skillet, and add to it the white wine, the grated peel and juice of the oranges, the loaf-sugar; and the yolks that have been well beaten. Mix the whole thoroughly; place it on hot coals and simmer it, stirring it all the time till it boils hard. Then take it off directly, strain it, and put it into moulds to congeal.
Directions for Cookery, in its Various Branches (1840).