Prepare the parmesan cream by heating the cream and melting the parmesan cheese. Let it cool and add the cream cheese, mixing until you get a smooth texture.
Quickly place the tortilla on top, pressing it with your fingers so it sticks well.
Flip it over and add the diced wild sockeye salmon. Sprinkle with a pinch of salt and oregano, cover, and cook on low heat for 5 minutes (no longer, as this salmon requires very little cooking).
Garnish with pickled onion, arugula, and the parmesan cream.
Notes
You can substitute the heavy cream for a lighter version and use light parmesan and cream cheese.By @mariacosbel