This dish is a favorite of mine and always a hit. It's quick, simple & easy. Placed on a bed of greens makes a nice presentation as well. Tarragon offers a wonderful variation and couples beautifully with Salmon. Of course for those less daring palates good ole dill is fine too. But before you shy away from the unknown please give tarragon a try, you might just be pleaseantly surprised. This recipe works well with virtually any fillet. I've used Tillapia, Whiting and even Catfish turned out great. An important key is raising the fish on a rack, without doing so the fish will poach. Though Panko is available at any Asian market, don't stress, unseasoned bread crumbs work just fine. I generally accompany this dish with garlic mashed potatoes and a green salad.