Grilled Tuna and Onions
|Tuna steaks||16 Ounce|
|Onion||1 Small, thinly sliced and separated into rings|
|White wine vinegar||1⁄2 Cup (8 tbs)|
|Sugar||1 1⁄2 Tablespoon|
|Dried mint flakes||2 Teaspoon|
|Vegetable cooking spray||1|
Place tuna and onion in a large shallow baking dish.
Combine vinegar and next 4 ingredients; pour vinegar mixture over tuna and onion.
Cover and marinate in refrigerator at least 2 hours, turning tuna occasionally.
Remove tuna from marinade, reserving 1/4 cup marinade and onion.
Place reserved onion on a large square of heavy-duty aluminum foil; pour reserved marinade over onion.
Fold foil over onion; seal tightly.
Coat grill rack with cooking spray; place on grill over medium-hot coals.
Place foil packet on rack; cook 15 to 20 minutes or until onion is tender, turning packet frequently.
Place tuna on rack; cook 6 to 8 minutes on each side or until fish flakes easily when tested with a fork.
To serve, place tuna on individual serving plates; spoon onion mixture evenly over tuna.