Four Seasons Resort Oahu at Ko Olina Partners with Polynesian Voyaging Society to Present Legendary Navigator Nainoa Thompson Source: press.fourseasons.com Legendary navigator Nainoa Thompson first conceived the idea of Malama Honua, a worldwide voyage, in 1992.
Instructions. 1  1. Soak the Cedar Planks: One to two hours before grilling, soak the planks in wine, sake, cider, or water. 2  3. Lay the Planks on the Grill: Arrange the planks on the grill in a single layer so they are in contact with the grill grates.
Sprinkle the tuna with salt; firmly press peppercorns into tuna. Place plank on grill rack over high heat; grill 5 minutes or until lightly charred. Carefully turn plank over; move to moderate heat. Place tuna on charred side of plank. Cover and grill 10 minutes or until desired degree of doneness. Serve tuna with orange mayonnaise.