Drain salmon (reserving 2 tbsp of juice). Remove any skin or bones (see notes)
In a medium bowl, mix together salmon, egg, onion and salt and pepper (until sticky).
Stir in flour.
Add baking powder to reserved salmon juice and stir.
Stir into salmon mixture.
Form into small patties.
Heat shortening in a large skillet until melted and hot.
Cook patties until golden brown (about 5 minutes)
Serve with tartar sauce.
Some folks like to eat the skin and bones. The bones are very tender and can be eaten. But if you don't enjoy that, then simply remove them from the meat. Sprinkle some dried parsley flakes into the mixture to add a bit of color