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Republic of the Rio Grande Grilled Tuna and Grapefruit Supreme Salad

This vibrant grilled tuna and grapefruit supreme salad is a sophisticated choice for those seeking a light yet satisfying meal. By pairing meaty tuna steaks with the bright, citrusy notes of fresh Texas red grapefruit, this dish creates a beautiful balance of flavours. The zesty dressing, enhanced with a hint of jalapeño heat and aromatic garlic, perfectly complements the richness of the fish, making it a standout option for a summer lunch or a refreshing evening meal.

As a heart-healthy recipe, this salad is packed with omega-3 fatty acids and vitamin C, offering a nutritious boost without compromising on taste. It is an ideal choice for anyone looking for a quick, homemade seafood dish that feels elegant enough for entertaining. Serve these beautifully dressed greens onto chilled plates and enjoy a colourful, restaurant-quality salad in the comfort of your own kitchen.

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Ingredients for Republic of the Rio Grande Grilled Tuna and Grapefruit Supreme Salad

  • 2 1/2 Texas red grapefruits

  • 1 tablespoon white wine vinegar

  • 180ml olive oil

  • 1 clove garlic, minced

  • 1/4 teaspoons salt

  • Freshly ground black pepper

  • 1 teaspoon minced jalapeño pepper, or hot pepper sauce

  • 4 tuna steaks, 6 to 230g each

  • 6 cups mixed salad greens

  • 2 tablespoons chopped fresh coriander leaves

  • 8 red onion slices

How to make Republic of the Rio Grande Grilled Tuna and Grapefruit Supreme Salad

Peel and segment 2 grapefruits; set aside. Squeeze the juice from the other half grapefruit into a measuring cup; it should yield about 1/4 cup of juice.

To make the salad dressing, combine the grapefruit juice, vinegar, oil, garlic, salt, freshly ground black pepper to taste, and minced jalapeño in a medium bowl; mix well. Cover and refrigerate the salad dressing.

Place the tuna steaks in a shallow dish. Pour 1 tablespoon of dressing over each piece of tuna. Turn the tuna in the marinade to coat. Cover with plastic wrap, or place all of the tuna steaks and marinade in a plastic bag, and refrigerate for 1 hour.

Light the grill. Remove the tuna from the refrigerator and allow to come to room temperature. Grill for about 4 minutes per inch of thickness for rare, 6 minutes for medium or until done to taste, turning at least once.

To serve, toss the greens with the salad dressing in a mixing bowl. Divide the dressed greens among 4 plates. Top each with a grilled tuna steak, then sprinkle with freshly ground black pepper. Spread grapefruit supremes over the top of the salad. Garnish with the coriander and red onion slices.

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.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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