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Grilled Arctic Char with Basil Sauce and Tomato

This grilled arctic char with basil sauce and tomato is a light and sophisticated dish that celebrates fresh, vibrant flavours. Arctic char is an excellent source of omega-3 fatty acids, making it a brilliant alternative to salmon or sea trout. The richness of the fish is perfectly balanced by a silky, homemade basil oil and the gentle acidity of vinegared tomatoes, creating a colourful plate that feels truly indulgent while remaining remarkably healthy.

As a heart-healthy main course, this recipe focuses on high-quality fats and lean protein, making it ideal for a nutritious midweek meal or a relaxed weekend lunch. The blanching of the basil ensures the sauce retains a striking emerald hue that looks beautiful against the grilled fish. Serve it alongside some steamed new potatoes or a crisp green salad for a complete, wholesome dinner.

Continue reading below

Ingredients for Grilled Arctic Char with Basil Sauce and Tomato

  • 1/2 cup firmly packed fresh basil leaves

  • 1/4 teaspoons minced garlic

  • 1/8 teaspoons salt

  • 50ml extra-virgin olive oil

  • 1/4 teaspoons packed light brown sugar

  • 1 teaspoon red-wine vinegar

  • 1 small tomato, cut into 1/3-inch-thick slices

  • 1 (170g) piece arctic char fillet

  • Accompaniment: fresh-cut lemon

How to make Grilled Arctic Char with Basil Sauce and Tomato

Blanch basil in a 1-quart saucepan of boiling water 15 seconds, then transfer with a slotted spoon to a bowl of ice and cold water to stop cooking. Squeeze excess liquid from basil and purée in a blender with garlic, salt, and 45ml oil.

Preheat grill. Line rack of a small grill pan with foil, then oil foil.

Stir together brown sugar and vinegar until sugar is dissolved, then overlap tomato slices on a large plate and drizzle with vinegar mixture. Season with salt.

Put fish, skin side down, on pan, then season with salt and pepper and drizzle with remaining 1/2 tablespoons oil. Grill fish about 3 inches from heat (without turning) until just cooked through, 6 to 8 minutes.

Put fish on top of tomatoes and spoon basil sauce on top. Serve with lemon.

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.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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