Ingredients

  • 1/2 cup chopped fresh mint
  • 3 tablespoons water
  • 2 tablespoons sugar
  • 1/2 cup white-wine vinegar
  • 2 cloves garlic, minced
  • 3/4 teaspoon salt
  • 4 tuna steaks, about 1 inch thick (about 2 pounds in all)
  • 1 tablespoon olive oil
  • 1/4 teaspoon fresh-ground black pepper

Method

  • Put 1/3 cup of the mint in a medium glass or stainless-steel bowl. In a small stainless-steel saucepan, bring the water to a simmer over moderate heat. Add the sugar and stir until completely dissolved. Stir in the vinegar, garlic, and 1/4 teaspoon of the salt. Pour the mixture over the mint in the bowl. Let sit 15 minutes.
  • Light the grill or heat the broiler. Coat the tuna with the oil. Season with the remaining 1/2 teaspoon salt and the pepper. Cook the tuna for 4 minutes. Turn and cook until done to your taste, 3 to 4 minutes longer for medium rare.
  • Strain the mint sauce through a sieve into a sauceboat or serving bowl. Stir in the remaining mint. Pass the sauce with the fish.
  • Fish Alternatives: Mackerel and salmon are both full-flavored enough to take on this sauce.
  • Wine Recommendation: Look for the lightest, leanest white you can find; anything else will have a tough time with the mint. Try a verdicchio-based wine from Italy or a vinho verde from Portugal.