To make the fish, preheat the oven to 400 degrees. Rinse and pat the pompano dry and season it inside and out with pepper. Place the rosemary and garlic inside the cavity. Place the salt in a large bowl. Whisk the egg whites together with 1/4cup water and pour it over the salt. Using your hands, distribute the liquid evenly through the salt.
04Choose a baking dish just slightly larger than the fish and pour a half-inch layer of the salt into the bottom. Place the fish over it and pour the remainder of the salt over and around it, making sure that a good layer covers the fish on all sides. Bake the fish for 35 minutes.05Remove the fish from the oven. Wrap the head of a hammer in cloth and use the flat side to break the salt. Pull the salt away to expose the fish and gently lift it from the salt, brushing away any that adheres to the skin. Place the fish on a platter and peel back and discard the skin. Pour parsley oil over the fish, surround it with lemon slices and serve.