Cooked in a parcel of greaseproof paper or foil to retain all the juices and flavours, the white wine, basil leaves and gentle anise flavour of fennel infuse the sweet snapper or mullet.
Wash the fish, dry on paper towels and refrigerate until needed. With a small sharp knife, trim off the small stalks at the top of the fennel bulbs, keeping the leaves and discarding the thick stalks. With a large sharp knife, cut the bulb in half from the top down through the root, then cut away and discard the root. Cut the fennel into 5 mm (¼ inch) thick slices.