Seared Ahi Tuna With Green Onion-Wasabi Sauce

Prep: 10 min Cook: 6 min Serves: 4 Cuisine: Japanese

Seared ahi tuna complemented by a zesty green onion-wasabi sauce, offering bold flavors perfect for a quick, elegant appetizer or light main dish for seafood lovers.

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Ingredients

  • 1/2 cup water
  • 3 tablespoons wasabi powder
  • 1/3 cup reduced-sodium soy sauce
  • 3 tablespoons peanut oil
  • 1 tablespoon dry sherry
  • 1/2 teaspoon sesame oil
  • 1 1/2 teaspoons minced fresh ginger
  • 4 green onions, very thinly sliced
  • 4 to 6 ounces ahi tuna steaks, about 1-inch thick
  • 1 cucumber, peeled, seeded, and cut into matchstick-sized strips
  • 1/2 cup radish sprouts

Instructions

  1. Whisk 1/2 cup water and wasabi powder in a medium bowl to form a smooth paste.
  2. Whisk in soy sauce, 2 tablespoons peanut oil, sherry, sesame oil, and ginger to the wasabi mixture.
  3. Stir in green onions and set aside.
  4. Sprinkle tuna steaks with salt and pepper.
  5. Preheat a very hot grill and sear the tuna quickly on both sides, about 3 minutes per side.
  6. Spoon cucumber matchstick strips onto the center of plates.
  7. Top with the seared tuna steaks.
  8. Spoon the green onion-wasabi sauce around the tuna.
  9. Garnish with radish sprouts and serve.

Tips & Substitutions

For an extra kick, consider adjusting the amount of wasabi powder to suit your taste. If you don't have peanut oil, you can substitute with grapeseed or canola oil. When searing the tuna, make sure your grill is extremely hot to achieve a nice crust while keeping the center rare. This dish pairs beautifully with shrimp mariniere for a delightful seafood spread.

Serving Suggestions

Serve this dish with a side of jasmine rice or a refreshing salad for a complete meal. The cucumber strips provide a nice crunch, while radish sprouts add a peppery finish. For a more robust meal, consider pairing with shrimp mariniere to complement the flavors of the tuna.

Storage & Reheating

Leftover seared tuna can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, gently warm the tuna in a skillet over low heat, or enjoy it cold in salads or sandwiches. The green onion-wasabi sauce can also be refrigerated for up to a week.

Nutrition & Diet Analysis (per serving)

Each serving of Seared Ahi Tuna With Green Onion-Wasabi Sauce contains roughly 957 calories, with 3g protein, 11g carbohydrates, and 103g fat. It is a good source of iron (14% of the Daily Value). Note that it is relatively high in sodium, at 1372mg per serving (60% of the Daily Value).

957 kcal 48% DV
Protein Fat Carbs

Macronutrients

Protein 2.9g 6% DV
Total Fat 102.6g 100% DV
Carbs 11g 4% DV
Fiber 2.1g 8% DV
Sugar 1.4g 3% DV

Electrolytes

Sodium 1372.2mg 60% DV
Potassium 317.4mg 7% DV
Cholesterol 0.2mg

Vitamins & Minerals

Vitamin A 4.2mcg
Vitamin C 2.4mg 3% DV
Vitamin D 0mcg
Calcium 36mg 3% DV
Iron 2.5mg 14% DV
Diet fit Keto-friendly
Contains Soy Peanut Fish Sesame

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use frozen ahi tuna steaks for this recipe?

Yes, you can use frozen ahi tuna steaks, but make sure to thaw them completely in the refrigerator before cooking. This ensures even cooking and prevents the tuna from becoming rubbery. Once thawed, pat them dry to achieve a good sear.

What if I can't find wasabi powder?

If you can't find wasabi powder, you can use prepared wasabi paste as a substitute. Just be aware that prepared wasabi can be more potent, so start with a smaller amount and adjust to your taste. Alternatively, horseradish can be used for a similar flavor profile.

How do I know when the tuna is cooked properly?

Ahi tuna is best served rare to medium-rare, so look for a deep pink center when slicing. Cooking time may vary depending on the thickness of the steaks, but about 3 minutes per side on a hot grill should achieve the desired doneness. Use a thermometer to check for an internal temperature of 125°F for medium-rare.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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