The best pan to use for this is an oval pan about 18 inches long by 12 inches wide, and about three inches deep. Cover the bottom with about a half-inch of salt. Place the fish on top of the salt. Now cover the fish with salt so that it mounds up about a half-inch thick at its thinnest part.
Using a clean spray bottle, spray water all over the salt until it's glistening with dampness. Put the pan into the oven at 375 degrees and bake for between 40 minutes (for a two-pounder) to an hour (for a four-pounder). If you want to be exacting, shove (this will not be easy) a meat thermometer through the salt and into the fish when you think it's nearing doneness. Look for an internal temperature of 125-130 degrees.
Remove the fish from the oven and allow it to stand for 10-15 minutes. Break the salt shell, brush off the excess salt and, as you carve the fish, remove the skin. This fish will be so juicy and delicious that no sauce is needed.
