Pre-heat grill over medium high.In a small baking dish combine soy sauce, lemon juice, mustard, and rosemary. Add tuna steaks and be sure to coat them well with the marinade. Allow to sit for about 15 per side being sure to give each a side a good dose of black pepper.

Cook tuna for about four to five minutes on the first side and flip. The second side will take another four to five minutes for a medium well-done tuna steak. My fish was frozen so I prefer to cook them a little more well done. If you like youre tuna closer to medium rare, be sure to cook it a little less.

Remove the grill and enjoy plain or topped with some Mango Cucumber Salsa w/ a Kiss of Rosemary!