A delightful recipe for grilled tuna steaks served with a tangy and spicy wasabi-ginger sauce.
Combine the mayonnaise, sour cream, green onion, wasabi paste, and grated ginger in a mixing bowl.
Chill the sauce in the refrigerator for at least 30 minutes to enhance the flavors.
In another bowl, mix the soy sauce, rice vinegar, and grated ginger to prepare the marinade.
Let the marinade sit for a few minutes to allow the flavors to meld.
Place the tuna steaks in the marinade, ensuring they are fully coated, and refrigerate for at least 1 hour.
Turn the tuna steaks halfway through marinating for even flavor distribution.
Preheat the grill to high heat. Lightly oil the grill grates to prevent sticking.
Ensure the grill is hot before placing the tuna to achieve a good sear.
Remove the tuna from the marinade and season with salt and pepper. Grill each steak for 2 minutes per side for a seared finish.
Avoid overcooking the tuna to maintain its tender texture.
Serve the grilled tuna steaks with the chilled wasabi-ginger sauce on the side.
Garnish with additional chopped green onions for a fresh touch.