Roasting a whole fish looks more daunting than it is. There are a few secrets to success: First, place the salmon on cheesecloth before roasting so it will be easy to transport from pan to platter. Also, deglaze the pan before removing the fish: Pour a small amount of wine into the hot pan to loosen any part of the salmon skin that might stick.
A magnificent salmon can be poached, glazed, and prepared for the table in a couple of hours, then kept in the refrigerator overnight. If the salmon is too long to fit in your fish poacher, you may cut off the head and tail, although the presentation is more beautiful with the entire fish intact. A six-pound salmon will feed about eight people.