It`s just mashed potato and cod.Poach your cod in a little bit of milk,drain and add to mash. Its up to you how fishy you make them. Mix in a little egg yolk to bind them.Using some flour on your hands form into cake shapes. Put in the fridge to firm up a little. You can either buy bread crumbs or make your own. If you havent got a processor to make them rub some crusts up and down a grater.....You now need a dish with flour,one with beaten egg,one with the crumbs.Flour your cake,then egg,then crumbs.Fry till golden.