Skip to main content

Seared Ahi Tuna and Avocado Tartare

Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026

Meets Patient’s editorial guidelines

This elegant seared tuna and avocado tartare is a vibrant, nutrient-dense dish that works perfectly as a light starter or a sophisticated lunch. By quickly searing the ahi tuna, you achieve a wonderful depth of flavour and a contrast in textures that elevates the fresh, raw components. The combination of zesty lime juice, fragrant coriander, and a hint of chilli provides a bright, zingy finish that beautifully balances the richness of the fish.

As a diabetes-friendly recipe, this dish is naturally low in carbohydrates and packed with heart-healthy fats from the fresh avocado and extra-virgin olive oil. The high protein content makes it a satisfying choice for those monitoring their blood sugar levels without compromising on taste. Serve it chilled on its own or with a few crisp cucumber slices for a refreshing, homemade treat.

In this article:

Continue reading below

Ingredients for Seared Ahi Tuna and Avocado Tartare

  • 30g ahi tuna steak

  • 50ml extra-virgin olive oil

  • 1 large avocado, peeled, pitted, diced

  • 1 serrano chilli or jalapeño chilli, seeded, deveined, minced

  • 1/3 cup chopped fresh coriander

  • 1/3 cup chopped red onion

  • 60ml fresh lime juice

  • 2 teaspoons chopped fresh oregano

How to make Seared Ahi Tuna and Avocado Tartare

Heat heavy small skillet over high heat 2 minutes. Brush tuna with 1/2 tablespoons oil; sprinkle with salt and pepper. Place in skillet and sear until brown outside and almost opaque in centre, about 3 minutes per side. Cool tuna; dice finely. Combine tuna, remaining 45ml oil, and all remaining ingredients in medium bowl. Using fork, mix just to blend. Season tartare to taste with salt and pepper and chill.

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
flu eligibility checker

Ask, share, connect.

Browse discussions, ask questions, and share experiences across hundreds of health topics.

symptom checker

Feeling unwell?

Assess your symptoms online for free

Sign up to the Patient newsletter

Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.

Please enter a valid email address

By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.