How to Make It
Step 1
Combine the soy sauce, orange juice, vinegar, brown sugar, orange peel, garlic, and hot pepper sauce in a dish. Add the tuna. Cover and set aside for 15 minutes. Light grill or broiler.
Step 2
When the coals are ash covered or the gas grill is hot, place the tuna on grill (or 6 inches beneath broiler). Dip the potatoes, tomatoes, peppers, and onion into the marinade and arrange, cut side down, on grill. Cover and cook 7 minutes. Turn over the fish and vegetables. Discard the marinade.
Step 3
Cover and cook 5 to 7 minutes more or until the tuna is opaque and the vegetables are fork-tender.
Step 4
Combine the romaine and basil on a platter. Sprinkle with the olive oil, lemon juice, salt, and pepper. Toss. Arrange grilled items on top. Serve.