Balık Ekmek (Balık Ekmek) — Istanbul-Style Grilled Fish Sandwich

• 600 gmackerel fillets, skin-on (boneless) (4 fillets, about 150 g each)
• 30 mlolive oil
• 30 mllemon juice
• 6 ggarlic, finely grated (about 2 cloves)
• 2 tspground cumin
• 2 tspsweet paprika
• 6 gfine sea salt
• 1 tspblack pepper, freshly ground
• 150 gred onion, thinly sliced
• 2 tspsumac
• 30 gflat-leaf parsley, roughly chopped
• 240 gtomatoes, sliced (about 2 medium tomatoes)
• 120 gromaine lettuce, shredded
• 4Turkish pide rolls or crusty sandwich rolls (about 120 g each)
• 20 gunsalted butter, softened (for toasting bread)
• 4 wedgelemon wedges
• 80 gpickled peppers (optional but traditional)

Instructions

1. 1

   Make the onion-sumac salad first so it has time to mellow. In a bowl, combine the sliced red onion with 2 g salt and the sumac, then massage firmly for 60 seconds until the onion softens and turns glossy. Fold in the chopped parsley and set aside for at least 10 minutes to lightly pickle in its own juices.

2. 2

   Marinate the fish to build the classic street-stall flavor without overpowering it. In a shallow dish, whisk together olive oil, lemon juice, grated garlic, cumin, paprika, 6 g salt, and black pepper until emulsified. Coat the mackerel fillets on both sides and rest for 10 minutes at room temperature so the seasoning adheres evenly.

3. 3

   Preheat your grill or grill pan over medium-high heat until it is thoroughly hot. If using a pan, lightly oil it with 5 ml of the olive oil from the marinade to reduce sticking and encourage browning. Keep a thin spatula or fish turner nearby so you can flip cleanly without tearing the skin.

4. 4

   Grill the mackerel skin-side down first to render fat and crisp the skin. Cook for 4–5 minutes without moving the fillets, then flip and cook 2–3 minutes more, until the flesh is opaque and flakes easily and the internal temperature reaches 63°C. Transfer to a plate and rest for 2 minutes so the juices redistribute and the fish stays moist in the bread.

5. 5

   Toast the bread for structure and aroma, which is essential for a good balık ekmek. Split the rolls and spread 5 g butter on the cut sides of each roll, then toast cut-side down on the grill or pan for 60–90 seconds until lightly golden. This creates a barrier that helps prevent the bread from getting soggy once the fish and vegetables go in.

6. 6

   Assemble each sandwich while the fish is still warm so the flavors bloom. Layer lettuce and tomato on the bottom half of each roll, add one grilled fillet, and top with a generous mound of the onion-sumac-parsley salad. Finish with a squeeze of one lemon wedge per sandwich, close the roll, and serve immediately with pickled peppers on the side.