Mix soy sauce, sesame oil, ginger and brown sugar in a small bowl, whisking until sugar and ginger are dissolved.

Put salmon on a baking sheet with a lip. Divide soy mixture and spoon over salmon, coating evenly.

Sprinkle sesame seeds on top of each filet, pressing them in lightly.

Bake in 400°F (200C) oven for 15 - 17 minutes, depending on thickness. Salmon will be done when it flakes easily, slightly pink in the center is fine. The sesame coated top should be a golden brown when done.

Remove and serve.

For easy clean up cover pan with foil first. This is especially nice if you are using fillets with the skin on. You can carefully lift the salmon off the skin to serve, leaving the skin on the foil. Then wrap the whole mess up and toss.