Make the lemon caper sauce: mix all ingredients into a bowl and set aside.
Salmon Burgers: in a food processor, add in the salmon and blend for about 4 seconds. Don't Fully Mix Yet.
Add in the remaining ingredients EXCEPT for 1/3 cup cassava flour and olive oil. Blend for another 6-8 seconds. Don't overmix.
Add the 1/3 cup cassava flour onto a large plate or bowl.
Heat a cast-iron skillet or non-stick skillet with olive oil.
Form your patties and dip each side into cassava flour. Cook for about 4-5 minutes per side.
Enjoy!