Fresh grilled mackerel is a fantastic summer supper. Here soy and lime marinade cuts through the richness of the fish.
For the mackerel, heat the cider vinegar, water, coriander stalks, caster sugar, red onion, peppercorns and lemon slices in a medium saucepan over a medium heat. Heat the mixture until just warm (about 60C), then remove from the heat. Transfer the contents of the pan to a flat, shallow container and set aside to cool.
When the mixture has cooled, place the mackerel fillets into the container, flesh-side down. Set aside to marinate for 20 minutes.
For the soy and lime dressing, combine all the dressing ingredients in a small pan and gently heat through until the sugar has dissolved. Set to one side.
Preheat the grill to its highest setting.
When the mackerel fillets have marinated, remove them from the marinade and pat dry with kitchen paper. Make several diagonal scores in the skin, going across the length of each fillet to stop them from curling up during cooking.
Brush a baking tray all over with oil. Arrange the mackerel fillets onto the greased tray, skin-sides facing upwards. Place under the grill and cook for 4-5 minutes, or until the skin is crisp and the flesh is cooked through.
For the salad, combined. all the salad ingredients in a large bowl.
To serve, divide the fennel salad equally among four serving plates. Place a grilled mackerel fillet on top of each portion. Spoon the salad dressing around the edge of the plate. Scatter over the remaining toasted fennel seeds.
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