Take one cupful of sour milk, one of sweet milk, a tablespoonful of melted butter, the yolks of four eggs, juice and rind of one lemon and a small cupful of white pounded sugar. Put both kinds of milk together in a vessel, which is set in another and let it become sufficiently heated to set the curd, then strain off the milk, rub the curd through a strainer, add butter to the curd, the sugar, well-beaten eggs and lemon. Line the little pans with the richest of puff paste and fill with the mixture; bake until firm in the centre, from ten to fifteen minutes.
The Whitehouse Cookbook, by Mrs. F.L. Gillette (Year 1887)