Spicy tuna is a simple, flavorful dish made with fresh sushi-grade tuna and a bold, spicy sauce. It brings together the clean, tender taste of raw tuna with the heat of sriracha, the nutty aroma of sesame oil, and optional creaminess from Japanese mayonnaise. The result is rich, zesty, and satisfying without being complicated.
This easy spicy tuna recipe is perfect for sushi rolls, hand rolls, spicy tuna bowls, or sashimi-style serving. It takes only a few minutes to prepare, and the key is using quality tuna and balancing the sauce so it enhances the fish rather than overpowering it.
What is spicy tuna?
Spicy tuna is a popular Japanese-style sushi filling or sashimi dish made by combining finely diced raw tuna with a spicy sauce. It is commonly found on Japanese restaurant menus and is especially well known as the filling for spicy tuna rolls.
The dish usually starts with high-quality sushi-grade tuna. The tuna is diced into small, even pieces so every bite has a soft, meaty texture. The spicy sauce is typically made with sriracha or another chili sauce, sesame oil, and sometimes mayonnaise or soy sauce. Once mixed together, the sauce coats the tuna and gives it a savory, spicy, and slightly creamy flavor.
Spicy tuna can be served in several ways. Use it inside sushi rolls with rice and nori, spoon it over sushi rice for a quick spicy tuna bowl, wrap it in hand rolls, or serve it sashimi-style with sesame seeds and sliced green onions. However you serve it, the best spicy tuna should taste fresh, balanced, and lightly chilled.
Ingredients Needed
- Fresh Tuna: Fresh sushi-grade tuna is the main ingredient. It should have a clean flavor and tender texture because it is served raw in this recipe.
- Sriracha: Sriracha adds the signature heat and tangy chili flavor. You can adjust the amount depending on how spicy you want the tuna to be.
- Sesame Oil: A small amount of sesame oil adds a warm, nutty aroma and deeper flavor to the spicy tuna mixture.
- Mayonnaise: Kewpie Japanese mayonnaise is optional, but it adds creaminess and helps mellow the heat of the sriracha. It also gives the mixture a smoother texture.
- Toppings: Thinly sliced green onions and sesame seeds are optional, but they add freshness, crunch, and a clean finishing touch.
How to make spicy tuna
Step 1: Prep the tuna. Pat the sushi-grade tuna dry with paper towels to remove excess moisture. Use a sharp knife to dice the tuna into small, even pieces. Transfer the diced tuna to a mixing bowl.
Step 2: Make the spicy sauce. In a separate bowl, stir together the sriracha, sesame oil, and Japanese mayonnaise, if using. Mix until smooth and well combined. Taste the sauce and adjust the spice level before adding it to the fish.
Step 3: Combine the tuna and sauce. Pour the spicy sauce over the diced tuna. Gently fold the mixture until the tuna is evenly coated. Avoid mashing the fish so the texture stays tender and clean.
Step 4: Chill before serving. Cover the bowl and refrigerate the spicy tuna for about 15 to 20 minutes. This short chilling time helps the flavors come together and keeps the dish refreshing.
Step 5: Add toppings. Just before serving, add sliced green onions or sesame seeds if desired. You can mix them in or sprinkle them on top as a garnish.
Step 6: Serve and enjoy. Serve spicy tuna as sashimi, use it as a sushi roll filling, add it to hand rolls, or spoon it over sushi rice with vegetables for a spicy tuna bowl.
Tips for the best spicy tuna
Use sushi-grade tuna: Since this recipe is served raw, the quality of the tuna matters. Buy sushi-grade tuna from a trusted fishmonger or grocery store.
Cut evenly: Dice the tuna into small, uniform pieces. This gives the spicy tuna a better texture and helps the sauce coat every bite.
Adjust the heat carefully: Start with the suggested amount of sriracha, then add more if you want extra spice. It is easier to increase the heat than to reduce it once the sauce is mixed with the tuna.
Add creaminess if you like: Kewpie mayonnaise gives the sauce a richer, smoother texture. If you prefer a lighter, sharper flavor, you can leave it out.
Chill briefly: A short rest in the refrigerator improves the flavor, but avoid letting the mixture sit too long. Spicy tuna is best enjoyed the same day it is made.
Serve it your way: This recipe works well for sushi rolls, rice bowls, hand rolls, or a simple appetizer with sesame seeds and green onions.
Spicy Tuna
Ingredients
- 6 oz sushi-grade tuna
- 1 tablespoon sriracha (adjust to taste)
- ½ tablespoon Kewpie Japanese mayonnaise (optional)
- 1 teaspoon sesame oil
Toppings (optional)
- green onions, thinly sliced
- sesame seeds
Instructions
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Prep the tuna: Pat the tuna dry with paper towels, then finely dice it into small, even pieces. Place it in a mixing bowl.
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Make the sauce: In a separate bowl, combine the sriracha, sesame oil, and Japanese mayonnaise if using. Stir until smooth.
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Mix: Pour the spicy sauce over the diced tuna and gently fold until every piece is coated.
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Chill: Cover and refrigerate for 15 to 20 minutes so the flavors can blend.
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Garnish: Add green onions and sesame seeds before serving, if desired.
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Serve: Enjoy as sashimi, in sushi rolls, in hand rolls, or over sushi rice with vegetables.
Notes
- Use sushi-grade tuna from a reputable source because this recipe is served raw.
- Dice the tuna with a sharp knife for the best texture.
- Adjust the sriracha to match your preferred spice level.
- For a creamier spicy tuna mixture, include the Kewpie mayonnaise.
- Serve the spicy tuna the same day it is prepared for the freshest flavor and texture.
Nutrition
Carbohydrates: 0.1g
Protein: 10g
Fat: 4g
Saturated Fat: 1g
Cholesterol: 17mg
Sodium: 114mg
Potassium: 112mg
Sugar: 0.1g