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Oil-Poached Tuna Salad

This elegant oil-poached tuna salad is a sophisticated upgrade to the classic Niçoise, offering a melt-in-the-mouth texture that simply cannot be matched by tinned varieties. By gently poaching fresh tuna steaks in a fragrant infusion of olive oil, rosemary and garlic, the fish remains incredibly succulent and flavourful. Paired with creamy flageolet beans, crisp green beans and a zesty lemon and anchovy vinaigrette, it is a vibrant dish that celebrates fresh, high-quality ingredients.

As a heart-healthy main course, this recipe is packed with omega-3 fatty acids and plant-based protein, making it as nutritious as it is delicious. It is a fantastic option for a light weekend lunch or an impressive dinner party starter. You can even prepare the tuna a day in advance and store it in its poaching oil, allowing the Mediterranean flavours to develop further before serving at room temperature.

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Ingredients for Oil-Poached Tuna Salad

  • 240ml dried flageolet or navy beans, soaked overnight, drained, or one 425g can navy beans, rinsed

  • Koshersalt

  • 450g green and/or wax beans

  • 725ml olive oil

  • 2 sprigs rosemary

  • 2 garlic cloves

  • 110g bigeye or albacore tuna steaks (about 1" thick)

  • Nymalen svartpeppar

  • 4 anchovies packed in oil, drained, finely chopped

  • 1 liten schalottenlök, finhackad

  • 1/4 cup chopped fresh flat-leaf parsley

  • 1/4 cup (or more) fresh lemon juice

  • 1 teaspoon Dijon mustard

  • 2 tablespoons chopped fresh dill plus small sprigs for serving

  • 150g small Sun Gold or cherry tomatoes, halved

  • 110g Kalamata olives, pitted, halved

  • A deep-fry thermometer

Bring flageolet beans and 950ml water to a boil in a large saucepan, reduce heat, and simmer until beans are tender, 50-60 minutes; season with salt. Let beans cool; drain. Transfer to a medium bowl. (Do not cook canned beans.)

Cook green beans in another large saucepan of boiling salted water until crisp-tender, about 5 minutes. Drain and transfer to a colander set in a bowl of ice water. Let cool; drain and set aside. Wipe saucepan dry.

Heat oil, rosemary, and garlic in same saucepan over medium-low heat until deep-fry thermometer registers 71°C. Season tuna with salt and pepper and cook in oil until opaque except for a bit of pink in the centre, about 4 minutes per side. Using a slotted spatula, transfer tuna to a plate. Let poaching oil cool, then remove rosemary and garlic. Set aside 1/4 cup oil.

Whisk anchovies, shallot, parsley, lemon juice, mustard, chopped dill, and reserved poaching oil in a small bowl; season with salt, pepper, and more lemon juice, if desired. Add some vinaigrette to bowl with flageolet beans and toss to coat.

Break tuna into large pieces and arrange on a platter with flageolet and green beans, tomatoes, and olives. Top with a few dill sprigs and serve with remaining vinaigrette alongside.

DO AHEAD: Tuna can be made 1 day ahead. Return fish to cooled oil, cover, and chill. Serve at room temperature.

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  • 28 jan 2026 | Ursprungligen publicerad

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