Salade Niçoise with Seared Tuna

A proper salade Niçoise is a composed French salad that eats like a complete meal: tender potatoes, crisp green beans, ripe tomatoes, briny olives and hard-boiled eggs arranged rather than tossed. In this version, quickly seared tuna steak gives the dish a fresh, substantial centrepiece while keeping the middle pink and delicate. The Dijon, red wine vinegar, shallot and caper vinaigrette cuts through the richness and seasons the warm potatoes particularly well. Served slightly warm or at room temperature, it is ideal for lunch or a light dinner where freshness, savoury depth and texture all matter.
Cuisine style French bistro-style salad
Flavor profile Tangy • Savoury • Fresh
Techniques Boiling • Blanching • Pan-searing
Key equipment Saucepan • Large frying pan • Whisk
Cooking style Make-ahead friendly
Time commitment Under 1 hour

Why this recipe works

  • Layered textures: Tender potatoes, crisp green beans, juicy tomatoes, firm eggs and seared tuna give the salad structure without feeling heavy.
  • Sharp, savoury dressing: Dijon mustard, red wine vinegar, capers and olives bring enough acidity and saltiness to balance the potatoes, eggs and tuna.
  • Flexible serving temperature: The salad works slightly warm or at room temperature, making it practical for lunch, light supper or relaxed entertaining.

Get the most out of this recipe

Timing notes

  • Serve warm or at room temperature: Avoid serving the salad fridge-cold; the vinaigrette tastes rounder and the vegetables have better texture when slightly warm or brought back towards room temperature.
  • Cook the tuna last: The potatoes, eggs and beans can be prepared first, but the tuna is best seared just before serving so it stays moist and pink in the centre.
  • Let potatoes steam-dry: After boiling, allow the potatoes to steam-dry briefly so they absorb the vinaigrette rather than watering it down.

Ingredient notes

  • Choose good tuna steak: Use a tuna steak suitable for quick searing, and pat it dry before it hits the pan for cleaner browning and neater slices.
  • Use ripe tomatoes: Ripe tomatoes are important here because they bring sweetness and juiciness to balance the salty olives, capers and mustardy dressing.
  • Adjust the vinaigrette to taste: Red wine vinegar gives a sharper finish; white wine vinegar makes the dressing a little softer if you prefer a gentler acidity.

Texture tips

  • Keep the tuna tender: Use a hot pan and a short sear so the outside browns while the centre remains pink. Longer cooking will make the tuna firmer and drier.
  • Drain the beans well: After blanching and cooling, drain the green beans thoroughly so they stay crisp and do not dilute the dressing.

Authenticity notes

  • Niçoise roots: Salade Niçoise is associated with Nice and the south of France, where the dish is known for its combination of vegetables, olives, eggs, tuna and a bright vinaigrette.
  • Fresh tuna variation: Seared fresh tuna is a modern, restaurant-style variation; simpler home versions often use preserved tuna while keeping the same composed-salad format.

Equipment you'll need

Ingredients
Instructions
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  1. Put the potatoes in a saucepan, cover with cold water and bring to the boil. Cook for 12 to 15 minutes until just tender, then drain and leave to steam-dry in the colander.
  2. Meanwhile, bring the saucepan back to the boil with fresh water and gently lower in the eggs. Boil for 9 minutes for hard-boiled, then drain and cool under cold running water.
  3. Bring another pan of water to the boil (or reuse the saucepan), add the green beans and cook for 3 to 4 minutes until bright green and tender-crisp. Drain and cool briefly under cold water, then drain well.
  4. Finely chop the shallot and put it in a mixing bowl with the Dijon mustard and red wine vinegar. Whisk in the olive oil until emulsified, then stir in the capers.
  5. Cut the tomatoes into wedges and halve the potatoes if large. Peel the eggs and cut into halves or quarters.
  6. Pat the tuna dry and rub with a little of the vinaigrette. Heat a large frying pan over medium-high heat with 1 tsp of the olive oil from the measured amount, then sear the tuna for 45 to 60 seconds per side so it is browned outside and still pink in the centre.
  7. Arrange the potatoes, green beans, tomatoes, olives and eggs on two plates, then spoon over most of the vinaigrette. Slice the tuna and lay it on top, then finish with the remaining vinaigrette and serve slightly warm or at room temperature.

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Recipe notes

Tips

  • For the best texture, dress the potatoes while they are still warm so they absorb the vinaigrette.
  • If you prefer the tuna more cooked, sear for 90 seconds per side, but keep the heat high so it does not stew.
  • Eggs should be cooked until the yolks are fully set; if serving to vulnerable groups, use eggs stamped with the British Lion mark or an equivalent safety standard.

Substitutions

  • Replace red wine vinegar with white wine vinegar for a slightly softer acidity.
  • Replace Dijon mustard with whole-grain mustard for a coarser, more rustic vinaigrette.
  • Replace shallot with white onion for a sharper flavour.

Storage

  • Refrigerate up to 2 days
  • Store the salad and tuna separately in airtight containers. Chill promptly, then bring to room temperature for 15 minutes before serving; if reheating the tuna, warm very gently in a frying pan so it does not dry out.

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Salade Niçoise with Seared Tuna
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Recipe overview

  • Servings: 2 servings
  • Total time: 45min (35min active)
  • Difficulty: Easy
  • Cuisine: French
  • Allergens:
    Eggs Fish Mustard
Beginner friendly

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