Flounder Poached in Broth

Thin fish fillet can be tricky to prepare, mostly because they fall apart the instant they’re overcooked. But the fact that quarter-inch-thick fillets of flounder, sole, and other flatfish take so little time to cook can be an advantage. By poaching them in barely hot liquid, you slow the cooking and gain control. By flavoring the liquid first with a quick-cooking aromatic vegetable, you create a dish that needs only bread or rice to become a meal. Unlike with broiling or sautéing, the fish never dries out. The traditional liquid for poaching fish is court bouillon, a stock made from scratch using fish bones, onions, carrots, and celery enhanced with white wine and herbs. Assuming you don’t have any court bouillon on hand—and who does?—my poaching liquid of choice is chicken stock, and the canned variety is fine, because you’re going to add flavor to it, and quickly, in the form of leeks and fish.