A bright, crackling scar of rice—golden at the edges, soft at its heart—meets a cool, spicy mantle of tuna. The sound of the first bite is a small celebration; the aroma is of toasted rice and sesame, the chill of the fish tempered by citrus and chile.
Why make this recipe This dish is a study in contrasts: crisp and yielding, cool and warming, simple ingredients elevated by texture and timing. It’s an elegant amuse-bouche for a dinner party or a meditative project for a quiet afternoon when you want to coax beauty and crunch from humble rice.
How to make Spicy Tuna Crispy Rice (Nobu Copycat)
Ingredients:
- For the rice cakes:
- 2 cups sushi rice (uncooked), rinsed until water runs clear
- 2 1/2 cups water
- 3 tbsp rice vinegar
- 1 tbsp sugar
- 1 tsp fine salt
- Neutral oil for frying (vegetable, canola, or grapeseed)
- For the spicy tuna:
- 8 oz sushi-grade tuna, finely diced
- 2 tbsp Japanese mayonnaise (Kewpie)
- 1–2 tsp sriracha (adjust to heat preference)
- 1 tsp light soy sauce
- 1 tsp toasted sesame oil
- 1 scallion, very thinly sliced
- 1 tsp toasted sesame seeds
- Optional: 1 tsp chili oil or 1 tbsp tobiko/masago for texture
- Garnish:
- Thinly sliced scallions, microgreens, or shiso
- A pinch of togarashi or sesame seeds
- A light drizzle of ponzu or soy for serving (optional)
Directions:
- Cook the rice: Combine rinsed rice and water in a rice cooker or heavy saucepan. Cook until tender. While still warm, fold in rice vinegar, sugar, and salt; taste for balance. Spread rice in an even layer on a tray to cool slightly and let steam escape—this helps it firm up.
- Form the cakes: When the rice is cool enough to handle but still warm, press it into an oiled 8×8 or 9×9 pan to a 3/4-inch thickness, pressing firmly to compact. Chill the pan in the fridge for at least 30 minutes, or freeze 10–15 minutes to set quickly.
- Cut and dry: Turn the chilled rice slab onto a cutting board and slice into 12–16 bite-size rectangles or squares. Pat any excess surface moisture with a paper towel; the drier the surface, the crisper the fry.
- Fry to crisp: Pour 1/4–1/2 inch of oil into a sturdy skillet and heat to medium-high (about 340–360°F / 170–180°C if you use a thermometer). Fry rice pieces in batches, pressing gently so each piece makes full contact with the pan. Cook until deeply golden and crisp, about 2–4 minutes per side. Transfer to a wire rack or paper towel-lined sheet to drain.
- Make the tuna: While rice cools briefly, fold together diced tuna, mayonnaise, sriracha, soy sauce, sesame oil, scallion, and sesame seeds. Taste and adjust for salt and heat. The mixture should be silky and lightly sauced—not soupy.
- Assemble: Spoon a small quenelle or mound of spicy tuna onto each warm, crispy rice cake. Garnish with microgreens, a scatter of tobiko or sesame, and a whisper of togarashi or ponzu if desired. Serve immediately.
How to serve Spicy Tuna Crispy Rice (Nobu Copycat) Serve these as a warm-to-cool interplay: rice hot and crisp, tuna cool and supple. Present them on a long platter, spaced so each piece keeps its crunch. Encourage guests to eat them in one bite to experience the layered textures and direct aroma of toasted rice and sesame.
How to store Spicy Tuna Crispy Rice (Nobu Copycat) Store components separately. Keep leftover spicy tuna in an airtight container in the fridge for up to 24 hours. Rice cakes are best eaten the same day; if you must keep them, refrigerate for up to 48 hours and re-crisp in a hot skillet or oven (400°F/200°C for 5–8 minutes). Do not assemble before serving if you want to retain crunch.
Tips to make Spicy Tuna Crispy Rice (Nobu Copycat)
- Use slightly chilled, compacted rice so the cakes hold their shape when frying.
- Pat the surface dry before frying—moisture is the enemy of crispness.
- Maintain steady oil temperature; too cool and the rice soaks oil, too hot and it burns before cooking through.
- Keep the tuna mix lightly sauced; excess liquid will soften the rice.
- Buy sushi-grade fish from a trusted source and keep it cold until use.
Variations (if any)
- Salmon version: Substitute sushi-grade salmon for tuna and add a touch of yuzu kosho for citrusy heat.
- Vegetarian: Use finely diced pressed tofu or avocado tossed with chili-garlic sauce and sesame.
- Oven-baked: Brush oil on rice cakes and bake at 425°F (220°C) until crisp, flipping once—less deep flavor but kinder on the counter.
- Crunch play: Add tempura flakes or crushed roasted nori to the tuna for extra texture.
FAQs Q: Is it safe to eat raw tuna in this recipe? A: Yes, provided you use sushi-grade tuna from a reputable seller and keep it well-chilled. Consume the prepared tuna within 24 hours and avoid cross-contamination with other foods.
Q: Can I make the rice cakes ahead of time? A: You can shape and chill the rice cakes a few hours ahead, and even refrigerate overnight, but fry them just before serving to preserve the crisp exterior.
Q: How do I re-crisp rice cakes without deep-frying? A: Re-crisp in a hot skillet with a thin film of oil, or in a 400°F (200°C) oven for 5–8 minutes. A hot cast-iron skillet gives the best golden crust if you prefer stovetop.
Q: What oil is best for frying? A: Use a neutral oil with a high smoke point—vegetable, canola, or grapeseed oil work well. They allow the rice’s toasted notes to sing without overpowering flavor.
Q: Can I use leftover plain rice? A: Day-old sushi rice can work if it’s sticky and compactable; refresh it with a little warmed seasoned rice vinegar mixture if it seems dry.
Conclusion
For another trustworthy take on technique and ratios, I like to cross-reference the approach at Spicy Tuna Crispy Rice (Nobu) – RecipeTin Eats, and for a slightly different Nobu copycat perspective, see Crispy Rice and Spicy Tuna Bites – Nobu Copycat – Moribyan.
There is a quiet joy in tending to rice and heat—an art of patience where texture reveals its story.

Spicy Tuna Crispy Rice
Ingredients
Method
- Combine rinsed rice and water in a rice cooker or heavy saucepan. Cook until tender.
- While still warm, fold in rice vinegar, sugar, and salt; taste for balance.
- Spread rice in an even layer on a tray to cool slightly and let steam escape.
- When the rice is cool enough to handle but still warm, press it into an oiled 8x8 or 9x9 pan to a 3/4-inch thickness.
- Chill the pan in the fridge for at least 30 minutes, or freeze 10–15 minutes to set quickly.
- Turn the chilled rice slab onto a cutting board and slice into 12–16 bite-size rectangles or squares.
- Pat any excess surface moisture with a paper towel; the drier the surface, the crisper the fry.
- Pour 1/4–1/2 inch of oil into a sturdy skillet and heat to medium-high (about 340–360°F / 170–180°C).
- Fry rice pieces in batches, pressing gently so each piece makes full contact with the pan.
- Cook until deeply golden and crisp, about 2–4 minutes per side. Transfer to a wire rack or paper towel-lined sheet to drain.
- While rice cools briefly, fold together diced tuna, mayonnaise, sriracha, soy sauce, sesame oil, scallion, and sesame seeds.
- Taste and adjust for salt and heat; the mixture should be silky and lightly sauced—not soupy.
- Spoon a small quenelle or mound of spicy tuna onto each warm, crispy rice cake.
- Garnish with microgreens, a scatter of tobiko or sesame, and a whisper of togarashi or ponzu if desired.
- Serve immediately.