Sprinkle salt generously on both side of the fish and let it sit at room temperature for 20 minutes. After 20 minutes… you should see the fish expel water, which makes the flesh denser. Wipe off any excess moisture on the fish.
Preheat the oven grill or toaster oven to 400F (200C). Place the fish skin side down on a baking sheet lined with aluminum foil or parchment paper (spray or brush oil so it doesn’t stick). Bake for 15 minutes, or until the fish is cooked through.
Flip the fish over so the skin is facing up, place tray to a higher rack, nearer to the heating element and grill for another 3-5 minutes.