Preheat oven to 200 C/ 400 F. Line a baking tray with baking paper.
Pat dry salmon fillets with a paper towel.
Season both sides with salt and pepper. Lightly dust with cornstarch (corn flour) or tapioca flour.
Heat oil in a large frying pan over medium-high heat.
Place salmon, skin side down, in the pan. Fry for about 2 minutes on each side.
Transfer to the baking tray. Bake for about 15-17 minutes or until cooked through.
Make teriyaki sauce.
Meanwhile, to the same pan, add teriyaki sauce, and bring to a simmer.
Add minced ginger. Stir to combine. Simmer for about 2-3 minutes.
Add salmon back to the pan. Spoon sauce over the fillets. Simmer for another 2 minutes.
Remove salmon from the pan. Simmer the sauce to reduce to a glossy glaze.
To serve, top rice with salmon and vegetables. Spoon the glaze over salmon.
Garnish with chopped spring onions (scallions) and sesame seeds.