Easy Spicy Tuna Recipe
Introduction
This easy spicy tuna recipe is perfect for a quick and flavorful meal. Using sashimi-grade tuna combined with a creamy, spicy sauce, it’s ready in just 10 minutes and serves two. Ideal for sushi lovers or anyone craving a fresh, zesty dish.

Ingredients
- 12 oz sashimi-grade tuna steaks (about 2–3 small tuna steaks)
- 2 tablespoon Kewpie Japanese mayonnaise
- 1 teaspoon sesame oil
- ½ teaspoon crispy chili oil
- 1 teaspoon sriracha
- ⅛ teaspoon flaky salt
- 1 tablespoon scallion, finely sliced
Instructions
- Step 1: Pat the tuna steaks dry with a paper towel, then dice them into small, even cubes.
- Step 2: In a medium bowl, combine the Kewpie mayonnaise, sesame oil, crispy chili oil, sriracha, and flaky salt. Mix well to create the spicy sauce.
- Step 3: Add the diced tuna to the sauce and gently fold until the tuna is evenly coated.
- Step 4: Sprinkle the finely sliced scallions over the top and serve immediately to enjoy the freshest flavor.
Tips & Variations
- Use sashimi-grade tuna to ensure freshness and safety when eating raw.
- Adjust the amount of sriracha and chili oil to control the spiciness to your taste.
- Serve over rice or in a sushi bowl for a more filling meal.
- Substitute scallions with finely chopped chives or fresh cilantro for a different herbal note.
Storage
Store leftover spicy tuna in an airtight container in the refrigerator for up to 24 hours. Because it’s made with raw fish, it’s best enjoyed fresh and not recommended for extended storage. If refrigerated, allow it to come to room temperature briefly before serving to enhance flavor.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use canned tuna instead of sashimi-grade tuna?
Sashimi-grade tuna is recommended because it’s safe to eat raw and has a delicate texture. Canned tuna won’t give the same fresh taste or texture and is typically cooked, so it’s not ideal for this recipe.
What can I use if I don’t have Kewpie mayonnaise?
You can substitute regular Japanese-style mayonnaise or a high-quality mayonnaise. Kewpie has a slightly sweeter, richer flavor, but other mayonnaises will still work well with the spicy sauce.
Print
Easy Spicy Tuna Recipe
- Total Time: 10 minutes
- Yield: 2 servings 1x
- Diet: Low Lactose
Description
A quick and flavorful Easy Spicy Tuna recipe featuring fresh sashimi-grade tuna diced and tossed in a creamy, spicy sauce made with Kewpie mayonnaise, sesame oil, and chili oils. Perfect as a light appetizer or a tasty main served immediately for the freshest taste.
Ingredients
Main Ingredients
- 12 oz sashimi-grade tuna steaks (about 2–3 small tuna steaks)
Spicy Sauce
- 2 tablespoons Kewpie Japanese mayonnaise
- 1 teaspoon sesame oil
- ½ teaspoon crispy chili oil
- 1 teaspoon sriracha
- ⅛ teaspoon flaky salt
Garnish
- 1 tablespoon scallion, finely sliced
Instructions
- Prepare tuna: Pat the tuna steaks dry using a paper towel to remove excess moisture. Then carefully dice the tuna into small, even cubes to ensure an even coating and texture.
- Mix sauce: In a medium-sized bowl, combine the Kewpie mayonnaise, sesame oil, crispy chili oil, sriracha, and flaky salt. Stir gently to create a smooth, well-incorporated spicy sauce.
- Toss tuna: Add the diced tuna pieces into the bowl with the prepared sauce. Gently fold the tuna and sauce together until the cubes are evenly coated without mashing or breaking them apart.
- Finish: Sprinkle the finely sliced scallions over the coated tuna. Serve the spicy tuna mixture immediately to enjoy the freshest flavors and textures.
Notes
- Use sashimi-grade tuna for the best flavor and safety as this recipe is served raw.
- Adjust the amount of sriracha or chili oil according to your preferred spice level.
- Serve this spicy tuna over rice, in sushi rolls, or with crackers as an appetizer.
- Consume immediately after preparation to maintain freshness and texture.
- Can be garnished with sesame seeds or avocado slices for added texture and taste.
- Prep Time: 10 minutes
- Cook Time: 0 minutes
- Category: Appetizer
- Method: No-Cook
- Cuisine: Japanese
Keywords: spicy tuna, sashimi tuna, tuna tartare, Japanese mayo, Kewpie, easy spicy tuna recipe, no-cook tuna, appetizer, seafood

