Potato cakes are the last word in frugality. Any dish that takes leftover mash and transforms it into a different meal entirely – with the help of only a handful of extra ingredients – deserves a great deal of praise indeed. Of course, you may wish to serve your Gluten Free Potato Cakes with a little something else – smoked mackerel is a particular favourite – but they are just as satisfying with a side salad or slaw.