Roll the puff paste, when ready, to rather more than a quarter of an inch in thickness.
Take a fluted cutter about the size of a tumbler.
Dip it in very hot water, and cut the paste into rounds with it.
Mark the middle of these rounds with a cutter about three sizes smaller.
Roll out the remains of the paste to half the thickness of the patties.
Stamp out some rounds for covers with a fluted cutter two sizes smaller than that used for the cases.
Put the cases and covers on a baking-tin, and bake in a quick oven for ten or fifteen minutes.
When cooked, lift the lid and scrape out the soft inside carefully.