- Soak plank in water 1 hour, then drain. Heat one side of grill to high heat.
- Combine vinegar and next 7 ingredients in a large zip-top plastic bag; seal. Shake to combine. Add salmon; seal. Marinate in refrigerator 30 minutes, turning once.
- Place wood plank on grill rack over high heat for 5 minutes or until lightly charred. Carefully turn plank over; move to cool side of grill. Remove fish from marinade; discard marinade.
- Place fish, skin side down, on charred side of plank. Cover and grill 15 minutes or until fish flakes easily with a fork. Sprinkle with onions and sesame seeds. Serve salmon on the plank or carefully remove to a serving dish.
Find more recipes from the chef at Waterfall Resort.