For a flavorful twist on grilled tuna steaks, try marinating them in soy sauce. In a bowl, combine soy sauce, sesame oil, garlic, and lime juice. Place the tuna steaks in a shallow dish and pour the marinade over them. Let the tuna marinate for at least 1 hour, turning occasionally. Grill the tuna steaks over medium-high heat until they are cooked to your desired level of doneness. The soy sauce marinade will infuse the tuna with a savory and umami flavor. Serve the grilled tuna steaks with a side of stir-fried vegetables for a healthy and satisfying meal.
