Baked Mackerel with Lemon and Rosemary

All the things that can he said in favour of herring go for mackerel as well; it is filling, tasty, cheap and healthy. In this recipe, lemon, capers and rosemary set off the richness of the fish to create a dish that is packed with flavour. However, if you don’t have or don’t like capers, the dish will still taste pretty good without them. For four people, use four mackerel, trimming off tails and heads if necessary to fit them in the dish. You’ll only need