‘Sussex pond’ is a classic British pudding usually made with a whole lemon inside, but my version is made with cumquats. This pudding was first recorded in Sussex, hence the name, and the pond is the gooey syrupy substance that forms in the centre of the pudding while steaming. It is crucial that you keep this boiling at all times, as a slight drop in temperature will cause your pudding to sink. Also, be very quick when you are turning it out, so the ‘pond’ will stay contained until you cut the pastry and allow it to flood the plate. If you wish to try it with lemon, I suggest you cut the lemon into eighths to speed up the cooking time, as it can take a long time to soften a whole one.