Have been wanting to try making this for the longest time. Finally had the chance to try it out last Sunday to be included as one of the items in my bento. Since I did not have any specific recipe in mind, what I did was to boil the potato, peel and mashed it. Chopped out some onions and sauteed it for a while before adding some ground chicken and pork into onions. Stir fry until the meat is cooked and added some salt and pepper to taste. Oh I have added a bit of grated nutmeg too. Added this into the mashed potato and shape it. Coated it with a light layer of plain flour and then in the beaten eggs and then coat it with Japanese breadcrumbs. Deepfry till golden brown. My boys like it.