When Shawn McClain makes it, Alaskan halibut is the star of this dish, served with labor-intensive lobster dumplings and topped with a warm tomato-water vinaigrette. We use local halibut from the fishmonger and omit the lobster dumplings. Instead of making tomato water, we coarsely chop heirloom tomatoes for a fresh, chunky tomato vinaigrette.