Combine marinade ingredients in a pan, bring to boil, boil for 1 minute. Cool.
Pour marinade over fish fillets in a large, shallow dish. Marinate for an hour in the fridge, turning halfway.
Preheat oven grill to medium. Place rack as close as possible to the grill while still able to fit an ovenproof pan beneath.
Drain marinade from salmon and place in a small pan; simmer over moderate heat for about 20 minutes or until reduced to about half a cup. Reserve.
Heat oil in an ovenproof pan over a high heat. Place salmon fillets, presentation side down, in the pan. Colour for a minute, then gently turn to other side. Cook for another minute, then place under grill.
Grill fillets for 2-4 minutes each side depending on thickness, brushing the reserved teriyaki sauce over fish to glaze. Remove from heat and rest for 5 minutes.
Serve with steamed rice and any juices left in the pan. Garnish with micro herbs.