Add the fish, skin side down, and use a fish slice or spatula to press it firmly into the pan for 30 seconds, to stop it from curling up. Leave it to cook for 2–3 minutes, depending on thickness.

pressing down on the sandwiches occasionally with a spatula or fish slice. Slide the sandwiches onto a board, cut in half and serve with a little more chopped coriander and some hot sauce for dipping.