Instructions

1. 1
   At least one hour before serving, prepare a marinade with the oil, vinegar or lime juice, tarragon leaves, salt and pepper in a flat container. Pour over the tuna steaks and turn them to make sure all pieces are well coated. Cover with plastic wrap and refrigerate until it is time to grill.
2. 2
   Spray a clean grill or grilling container with non-stick cooking spray.
3. 3
   Drain and reserve the excess marinade from the tuna. Grill tuna for about 4 minutes on each side or until nicely charred on the outside and still a bit pink in the middle.
4. 4
   Place the steaks on individual serving dishes and pour the marinade on the grilled tuna.
5. 5
   Serve with steamed vegetables, steamed rice, or a spinach salad.