Mix together the teriyaki marinade ingredients and heat in a small pan to dissolve the sugar. Leave to cool. Place the salmon in a flat dish and pour over the cooled marinade, make sure the salmon is skin side up. Cover and leave to marinate for 1 hour in the fridge.
Pre-heat the oven to 200° C, 180° C fan, gas mark 6. Heat the oil in a frying pan until hot, then add the salmon, skin side down, turn the heat down to medium and cook for 10 minutes.
Transfer the salmon to a baking sheet and spoon over a little marinade. Cook in the oven for 10 – 15 minutes. Meanwhile place the remaining marinade in a small pan and bring up to the boil, spoon over the cooked salmon before serving. Serve with white rice and stir fried greens if you like.