Leeks in Vinaigrette with Walnuts and Tarragon
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This elegant recipe for leeks in vinaigrette with walnuts and tarragon is a sophisticated take on a classic French bistro salad. By gently boiling the leeks until they are completely tender, you achieve a buttery texture that pairs beautifully with the sharp, piquant mustard dressing. The addition of toasted walnuts provides a satisfying crunch, while fresh tarragon lends a delicate aniseed note that lifts the entire dish.
As a heart-healthy choice, this recipe is rich in healthy fats from the extra-virgin olive oil and walnuts, making it as nutritious as it is flavourful. It works wonderfully as a light starter or a side dish for roasted chicken or grilled fish. For the best results, allow the leeks to marinate in the vinaigrette for at least ten minutes to soak up the punchy flavours.
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Ingredients for Leeks in Vinaigrette with Walnuts and Tarragon
240ml walnuts
120ml extra-virgin olive oil
Kosher salt
6 large leeks, tough outer layer removed
1 garlic clove, finely grated
60ml white wine vinegar
1 tablespoon plus 1 teaspoon Dijon mustard
1 tablespoon plus 1 teaspoon whole grain mustard
80ml coarsely chopped tarragon
Freshly ground black pepper
How to make Leeks in Vinaigrette with Walnuts and Tarragon
Preheat oven to 177°C. Toast walnuts on a rimmed baking sheet, tossing once, until golden brown, 6–8 minutes. Let cool, then coarsely chop. Transfer to a small bowl and toss with oil; season with salt.
Trim root ends of leeks and 1" from the dark green tops. Cut leeks into 1/2"-thick rounds (the dark green parts won’t be rounds, but that’s okay). Rinse well.
Cook leeks in a large pot of boiling salted water until meltingly tender, 12–15 minutes. Transfer to a bowl of ice water to stop the cooking. Drain and pat dry.
Whisk garlic, vinegar, and Dijon and whole grain mustards in a small bowl; season vinaigrette with salt.
Arrange leeks on a platter; drizzle with vinaigrette and let sit at least 10 minutes (the longer, the better).
Just before serving, scatter walnut mixture over leeks and top with tarragon and lots of pepper.
Leeks (without walnut mixture and tarragon) can be marinated 1 day ahead. Cover and chill. Bring to room temperature before serving.
Clause de non-responsabilité
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Historique de l'article
Les informations contenues dans cette page ont été évaluées par des cliniciens qualifiés.
16 janvier 2026 | Publié à l'origine
Auteur: :
UK recipe editors
Examiné par des pairs
UK recipe editors

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