Cut the potaoes into small pieces and boil them in the milk with some salt.
Bake the fish.
Use a food processor to combine the potatoes, fish, egg, flour and add enough milk to make it cramy.
Season with salt and pepper.
Fry the mixture in a pan is small portions. Press and turn the 'cakes' against the side of the frying pan to make them. Fry on both sides until light brown and serve with salad and thai dipping sauce, or any other sauce that complements fish.