Hermione picked up a biscuit, "You take two of these which act as the "sandwich bread,’ a piece of chocolate, and a marshmallow then layer it like so but first you need to toast the marshmallow over the fire. It can be tricky since they get gooey with the application of heat so it becomes a game of sorts to see how long you can toast them before they fall off the skewer and drop into the fire. You can also decide how long you want them to toast. Mum likes them just slightly browned while Daddy likes them burnt to a crisp. I’m kind of in the middle."