Istanbul’s mackerel sandwiches

“Walking along the Bosporus in Istanbul, one of the most iconic sights is that of men standing at the side of the water behind small barbecues, grilling fresh mackerel for these tasty takeaway sandwiches that are best eaten staring out at the bobbing waters. My version substitutes grilling the fish for frying, but you can still cook these over coals at a barbecue if you’d prefer. They are a great way to feed a crowd,” says food writer Yasmin Khan.

“The salad ingredients here are just a rough approximation – I’ll leave it for you to judge exactly how much of each vegetable you want in your sandwich – just don’t skip the mint, or the dressing, as you need its sharpness and piquancy to cut through mackerel’s intense flavour.”

Ingredients: (Serves 2)

For the dressing:

2tbsp extra virgin

Olive oil, plus more to serve 2tbsp lemon juice

1tbsp pomegranate molasses 1/4tsp sumac

1/4tspn pul biber (Aleppo pepper) 1/2 garlic clove, bashed

Salt and black pepper

For the sandwich:

1/4 small red onion, or enough for 2-3 rings per sandwich, or to taste 2 ciabatta rolls, each cut to the size of a mackerel fillet

2 mackerel fillets

Olive oil

Small handful of mint leaves, roughly chopped

70g carrot (about 1/2 medium carrot), grated

Large handful of rocket

1 ripe, juicy tomato, finely sliced

Method:

1. Put all the ingredients for the dressing in an empty jam jar with a quarter teaspoon each of salt and black pepper. Seal the jar, then shake vigorously and set aside for five minutes.

2. Place the red onion in a shallow bowl, pour over the dressing (removing the garlic) and leave to marinate (to remove some of its astringency).

3. Take a plate and cover it with kitchen paper, ready to soak up the oil from the mackerel later. Preheat the oven to 200°C/fan 180°C/Gas 6 and cut the pieces of ciabatta in half. Pop the bread in the oven for five minutes, so it warms up and is lightly toasted.

4. Spoon a couple of teaspoons of the dressing over the flesh side of the mackerel, then season the fish generously with salt. Heat two tablespoons of regular olive oil in a frying pan over a medium-high heat. Add the mackerel, skin side down, and fry for three to four minutes. Once the skin has begun to crisp up, flip the fillets and cook for another one to two minutes on the other side, until just cooked through.

5. While the fish is cooking, place the mint, carrot and rocket in the bowl with the onion and toss well.

6. When the mackerel is ready, transfer the fish to the plate lined with kitchen paper and begin assembling the sandwiches.

7. Drizzle the toasted bread with good-quality extra virgin olive oil. Then layer the mackerel on to the bread, followed by the tomatoes with a pinch of salt added, then the carrot mixture, then a couple of teaspoons of the dressing. Pop the top layer of bread on the sandwich and eat immediately.