Poaching — cooking in simmering liquid — is a fairly forgiving way to cook fish, since it’s not likely to dry out. (It also virtually eliminates the likelihood of anything sticking to the bottom of the pan, which is often in the back of your mind when you sauté.) I love using this method with striped bass, which has the added bonus of being a local fish, but you can use any firm white fillets or steaks. It’s also a great way to cook mackerel or bluefish, other locals.
As the fish cooks, the soy sauce turns it a beautiful golden brown, almost verging on mahogany. Since the skillet is uncovered, the liquid reduces, intensifying in flavor and becoming thicker and thicker. In the end you want to be left with a kind of glaze that coats the fish and serves as a sauce for the rice that you should definitely eat with it. Use a minimal amount of liquid; if you start out with too much, the fish will cook through before the liquid reduces.
One unexpected treat in this recipe is the scallions. They drink up all the flavor of the poaching liquid and become tender, but they still hold on to a slight crunch. A whole skillet of those served over rice would almost make you not miss the fish.
(Watch the video and get the recipe here.)