We brought Bev a two-pound fillet of ono from Suisan Fish Company in Hilo. It is the most excellent and prized of Hawaiian fishes, and she made a wonderful dish with it. I believe she learned this in France.
Put a stick of butter in a hot skillet and cook until quite brown. Add the fish (cut in smallish serving pieces) and cook, turning once or twice, until done just halfway through. Set fish aside to keep warm. Add a cup or so of white wine to the pan and boil until somewhat reduced. Add capers to taste and season with salt and pepper. Return fish to pan and coat with sauce. Serve at once.
That pale orange side dish in the photo is green papaya salad.