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Cured Arctic Char

This elegant cured arctic char is a sophisticated addition to any high-protein menu. Similar to a classic gravadlax, the fish is infused with bright notes of orange and lemon zest, pungent mustard seeds, and a splash of aquavit for a traditional Nordic finish. The curing process transforms the texture into something beautifully firm and translucent, offering a delicate savoury flavour that pairs perfectly with the acidity of homemade quick-pickled red onions.

Perfect for a light lunch or a celebratory appetiser, this dish is traditionally served on soft lefse bread with a cool dollop of crème fraîche. It is an excellent make-ahead recipe, as the fish can be cured up to a week in advance, allowing the flavours to develop. High in healthy fats and lean protein, it is a nutritious yet indulgent way to enjoy sustainable cold-water fish.

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Ingredients for Cured Arctic Char

  • 1 whole large skin-on arctic char, (1-675g), bones removed

  • 70g kosher salt

  • 70g sugar

  • 2 teaspoons mustard seeds

  • 2 teaspoons finely grated orange zest

  • 1 teaspoon finely grated lemon zest

  • 2/3 cup finely chopped fresh dill

  • 2 tablespoons aquavit

  • 1/4 small red onion, chopped

  • 60ml apple cider vinegar

  • 2 teaspoons sugar

  • 1/2 teaspoons kosher salt

  • Lefse

  • Creme fraiche and dill sprigs (for serving)

  • Flaky sea salt (such as Maldon)

Rinse char under cold running water; pat dry with paper towels. Mix salt, sugar, mustard seeds, orange zest, and lemon zest in a small bowl, then massage into char. Place skin side down in a baking dish; top with dill and drizzle with aquavit. Cover tightly with plastic wrap, pressing directly onto fish. Chill, turning 2–3 times and pouring off any accumulated liquid each time, until flesh is very firm and almost translucent, 2–4 days (it will get saltier and firmer the longer it sits). Thoroughly rinse char and pat dry with paper towels.

DO AHEAD: Char can be cured (and rinsed) 1 week ahead. Cover and chill.

Place onion in a small heatproof jar. Bring vinegar, sugar, kosher salt, and 2 tablespoons water to a simmer in a small saucepan, stirring to dissolve. Pour over onion. Cover and chill until onion is bright pink, at least 8 hours and up to 2 days.

Thinly slice char and serve on lefse topped with crème fraîche, dill, pickled onion, and sea salt.

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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