Make the marinade by mixing all the sauce ingredients.
Season with salt and pepper.
Cut the skin off the salmon, then rinse, dry and marinate in the earlier prepared sauce for 1 hour.
In the meantime, cook the rice according to the instructions on the packaging. Add the green beans to the cooking rice 4 minutes before the end of cooking, then drain.
Next, add the sweetcorn and mix well. Preheat the oven to 450F (230C). Place the salmon into an oven-proof dish leaving the marinade aside.
Bake for 8-10 minutes,, and 3 minutes before the end of baking sprinkle with sesame seeds.
Transfer the marinade into a small saucepan and heat until it thickens, then mix in the sesame oil, take off the heat and set aside.
To serve, divide the rice and salmon between plates, then drizzle with the teriyaki sauce.