DO-AHEAD TIP: Toast sesame seeds; marinate fish for at least 1 hour (see recipe).
Arrange fish fillets in a shallow dish.
In a small bowl, combine soy sauce, lemon juice, olive oil, ginger root, brown sugar, and sliced green
onion; pour mixture over fish. Cover and refrigerate for at least 1 hour.
Preheat oven broiler. Drain fish, reserving marinade. Bring marinade to a boil in a small saucepan and
simmer until reduced by 1/3.
Meanwhile, place fillets on a rack coated with a little olive oil then place the rack on a broiler pan. Broil 4 to 5 inches from heat source for 3 to 4 minutes; turn and baste with marinade.
Broil for an additional 3 minutes or until fish flakes easily when tested with a fork; baste with remaining marinade.
Sprinkle fish with toasted sesame seeds.