Marinated Tuna Steaks

4 (4 ounce) tuna steaks
1 small onion, thinly sliced and separated into rings
1/2 cup white wine vinegar
1 tablespoon and 1 teaspoon sugar
2 teaspoons dried mint
Salt and pepper to taste

Place tuna and onion in a shallow baking dish. Combine vinegar and next 3 ingredients and pour over tuna and onion. Cover and marinate in the refrigerator about 2 hours, turning occasionally. Remove tuna and set aside. Place onion and marinade in heavy duty foil and seal tightly.

Generously coat grill of barbecue or broiler rack with cooking spray. Place over medium-hot coals or in a preheated broiler. Place tuna steaks on the grill/rack and cook 6-8 minutes. Turn the steaks and place the foil packet on grill/rack. Continue cooking tuna and onion packet 6-8 minutes or until fish flakes easily with a fork. Serve onion and heated marinade over tuna steaks.

Makes 4 servings
Serving Size: 1 tuna steak

Nutrition Info.
Calories: 195
Total fat: 6 grams (26% of calories)
Saturated fat: 1 gram
Cholesterol: 43 mg
Sodium: 436 mg
Carbohydrate: 8 grams (18% of calories)
Protein: 27 grams (56% of calories)
Dietary fiber: 1 gram