Ingredients

  • 2 lb bluefin tuna loin or belly, cut into 4 thick portions
  • ¼ cup soy sauce
  • ¼ cup mirin
  • 1 tbsp rice vinegar
  • 1 tsb sesame oil
  • Fresh cracked black pepper

For Finishing:

  • 2 tbsp neutral oil (for grill)
  • 3 tbsp furikake
  • ¼ cup fresh chives, finely sliced
  • Optional: flaky sea salt, to taste
  • Optional: fresh lemon or yuzu

Method

  1. Marinate the Tuna (Quick & Clean)
    Whisk soy sauce, mirin, rice vinegar, sesame oil, and black pepper.
    Lightly brush the tuna with the marinade and let rest 5–10 minutes only (do not over-marinate).

  2. Heat the Grill
    Get the grill ripping hot—high heat is essential.
    Oil the grates well with neutral oil.

  3. Grill Hot & Fast
    Lay tuna on the grill and sear:
    • 45–60 seconds per side for rare
    • Up to 90 seconds per side for medium-rare
      You want bold grill marks with a cold, ruby center.

  4. Rest & Finish
    Rest 2 minutes.
    Brush lightly with any remaining marinade.

  5. Garnish
    Shower with furikake and fresh chives.
    Add a squeeze of lemon or yuzu if desired.