Reduce the potatoes and the salmon. Mix the melted butter, potatoes, salmon and egg in a baking bowl (use a whisk). Form 4 small meat loaves.
Pour breadcrumbs in a plate and bread the meat loaves. In fact, heat oil in a non-stick frying pan. Put the meatballs on it and fry them in oil for 2 min. After frying, bring the meatballs to the table on the spot.