Discard the bones carefully.
In a large bowl, combine salmon, mashed potato, 1/2 of the bread crumbs, onion, lemon juice and soy sauce.
Stir in egg.
Shape into 6-8 patties.
Coat each patty in bread crumbs.
In non-stick skillet heat oil, add patties and cook 4 minutes per side.
Transfer patties to baking sheet and place in oven preheated to 350°F (175°C). Bake 10 minutes more.
Makes 6-8 patties.