I've had this recipe at the Canoe House Restaurant and it is wonderful. Here's a little bit about the dish and the restaurant. At the Mauna Lani Bay Hotel on Hawaii's Kohala coast, CanoeHouse chef Pat Saito uses ono steaks (a type of mackerel) for this dish. Ahi tuna, which is easier to find, makes a good substitute. Saito serves the fish with wasabi-laced mashed potatoes.