1. Soak the cedar
planks for at least 1 hour in warm water. Soak longer if you have time.
2. In a shallow dish,
stir together the vegetable oil, rice vinegar, sesame oil, soy sauce, green
onions, ginger, and garlic. Place the salmon fillets in the marinade and turn
to coat. Cover and marinate for at least 15 minutes, or up to one hour.
3. Preheat an outdoor
grill for medium heat. Place the planks on the grate. The boards are ready when
they start to smoke and crackle just a little.
4. Place the salmon
fillets onto the planks and discard the marinade. Cover, and grill for about 20
minutes. Fish is done when you can flake it with a fork. It will continue to
cook after you remove it from the grill.