Sea bass makes an excellent fish to cook on the barbecue. By filling the sea bass cavity with sprigs of fennel you impart a fresh and delicious taste to the fish. The fish is then served on a bed of steamed samphire that has been tossed in a little butter and seasoned with freshly ground black pepper. A freshly prepared garlic alioli makes a simple but flavoursome sauce to serve with the fish. TO cook the fish you will need a fish grilling rack and the barbecue should not be too hot.