Rosemary-Lemon Grilled Ahi

10 ingredients
5 steps

Ingredients

  • For the marinade
  • 6 lemons, cut in 1/2
  • salt & freshly ground black pepper
  • 2 teaspoons finely chopped garlic
  • 2/3 cup extra virgin olive oil
  • 1/3 cup fresh rosemary leaf, chopped
  • For the skewers
  • 4 rosemary sprigs (about 6 to 8 inches long) or 4 metal skewers
  • 4 center-cut ahi tuna steaks, cut into blocks 3/4 to 1-inch thick (about 5 ounces each)
  • salt & freshly ground black pepper

Directions

  1. 1
    To make the marinade:
  2. 2
    Preheat broiler. Place lemons, cut side up, in a small, non-aluminum baking dish and sprinkle with salt and pepper. Roast, about 6 inches below the heat, until very soft, about 20 minutes. The tops will darken and caramelize. Let cool in the baking dish.
  3. 3
    Squeeze the lemon pulp and juice and scrape all the cooking juices from the baking dish into a strainer supported over a bowl. Force it through and add garlic. Whisk in rosemary and extra-virgin olive oil. Keeps up to 1 week refrigerated in a tightly sealed container.
  4. 4
    Soak rosemary or wooden skewers in water to cover 1 to 2 hours.
  5. 5
    Preheat grill or broiler. Skewer 2 tuna pieces lengthwise on each rosemary sprig and brush with marinade. Season with salt and pepper and grill, turning once or twice, to medium rare, 8 to 10 minutes, depending on heat. Serve immediately.

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