Deep-Poached Fish Fillets
This is the standard technique for poaching most thick (at least 1 inch) fish fillets or steaks, such as halibut or salmon. Similar to braising, the fish is gently simmered in a flavorful liquid, only in this method the fish is completely covered in liquid. (To poach thinner fillets, follow the shallow-poaching method on page 210, as they may overcook if deep poached.) The cooking time will depend on the thickness of the fillet; plan for 4 to 5 minutes per inch. In this recipe, halibut fillets are poached in chicken stock enhanced with a few aromatics and then served in their cooking liquid (a manner of serving called “à la nage”).