Fried Fingerling Potatoes with Tarragon Sauce
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 28 Jan 2026
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This elegant vegetarian dish elevates the humble spud into something truly special. These fried fingerling potatoes with tarragon sauce offer a wonderful contrast of textures, featuring a satisfyingly crisp exterior and a fluffy, tender middle. The fresh tarragon mayonnaise provides a creamy, herbal lift, while the fried capers add a punchy, salty crunch that ties all the flavours together. It is an ideal choice for those looking to serve a sophisticated side dish that feels both indulgent and refined.
Perfect as a dinner party accompaniment or a superior snack, this recipe focuses on simple, quality ingredients. The potatoes and the herb-infused mayonnaise can be prepared in advance, making it a stress-free option for entertaining guests. Whether served alongside a crisp green salad or as part of a larger spread, these potatoes bring a touch of restaurant-quality cooking to your home kitchen while remaining wonderfully easy to assemble.
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Ingredients for Fried Fingerling Potatoes with Tarragon Sauce
450g small fingerling potatoes
40g kosher salt
1 large egg yolk, room temperature
1 teaspoon fresh lemon juice
Coarse sea salt
120ml plus 1 1/2 teaspoons extra-virgin olive oil
1 tablespoon finely chopped shallot
1/2 teaspoons finely chopped fresh tarragon
Freshly ground black pepper
1 1/2 tablespoons drained capers, patted dry
Vegetable oil or grapeseed oil (for frying)
How to make Fried Fingerling Potatoes with Tarragon Sauce
Back to contentsBring potatoes, 60ml kosher salt, and 1925ml water to a boil in a large saucepan and cook until potatoes are tender, about 12 minutes. Drain; let cool completely. Halve potatoes lengthwise. DO AHEAD: Can be made 1 day ahead. Cover and chill.
Whisk egg yolk, lemon juice, and a pinch of sea salt in a small bowl. Gradually whisk in 120ml olive oil until mayonnaise forms. Stir in shallot and tarragon. Season to taste with pepper. DO AHEAD: Can be made 4 hours ahead. Cover and chill.
Heat remaining 1 1/2 teaspoons olive oil in a small skillet over medium-high heat. Add capers and fry, stirring often, until crisp and golden, 2-3 minutes. Using a slotted spoon, transfer capers to paper towels to drain. DO AHEAD: Can be made 4 hours ahead. Let stand at room temperature.
Pour vegetable oil into a large pot to a depth of 2". Attach a deep-fry thermometer to side of pot. Heat oil over medium heat until thermometer registers 191°C. Working in batches, fry potatoes until crisp and dark golden brown, 3-4 minutes. Drain on paper towels. Season lightly with sea salt.
Arrange warm potatoes on a platter, cut side up. Spoon some mayonnaise over each; sprinkle with capers.
Disclaimer
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.
Article history
The information on this page is peer reviewed by qualified clinicians.
28 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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