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Crispy Tuna Avocado Rice Burger sliced in half, featuring golden crunchy sushi rice buns, fresh tuna, creamy avocado, and leafy greens.

Crispy Tuna Avocado Rice Burger


  • Author: Omar
  • Total Time: 1 hour
  • Yield: 2 burgers 1x

Description

A delicious Crispy Tuna Avocado Rice Burger made with golden, crunchy sushi rice buns, fresh fatty tuna, creamy avocado, green onions, and a sweet and spicy wasabi soy sauce. This Japanese-inspired rice burger combines crispy textures with bold, fresh flavors for an unforgettable homemade meal.


Ingredients

Scale

For the Crispy Rice Buns:

  • 500 g freshly cooked sushi rice (about 3 cups)

  • 3 tablespoons rice wine vinegar

  • 2 tablespoons white sugar

  • 1 teaspoon salt

  • Neutral oil for frying

For the Tuna Avocado Filling:

  • 200 g fatty tuna (toro), suitable for raw consumption

  • 1 lime, zested and juiced

  • ½ cup green onions, finely sliced

  • 20 g masago (optional)

  • 1 ripe avocado, thinly sliced

  • 1 teaspoon kosher salt, or to taste

For the Wasabi Soy Sauce:

  • 2 tablespoons light soy sauce

  • ½ tablespoon fresh lime juice

  • 1 teaspoon honey

  • 1 teaspoon wasabi


Instructions

1. Prepare the sushi vinegar: In a microwave-safe bowl, combine the rice vinegar, sugar, and salt. Microwave for 30 seconds and stir until the sugar dissolves.

2. Season the rice: Transfer the freshly cooked sushi rice to a large bowl. Gently fan away excess steam. Slowly pour the vinegar mixture over the rice and fold carefully to combine without crushing the grains.

3. Let the rice rest: Cover with a clean kitchen towel and allow the rice to absorb the seasoning for 5 minutes.

4. Shape the rice: Line a baking tray with plastic wrap. Spread the seasoned rice into an even layer about ½ inch (1 cm) thick. Cover with another sheet of plastic wrap and press firmly using a second baking tray.

5. Chill the rice: Refrigerate for at least 1 hour until firm and compact.

6. Cut the rice buns: Using a lightly moistened round cutter or small rice bowl, cut four evenly sized rice disks. Place on parchment paper.

7. Fry until crispy: Heat neutral oil in a heavy-bottomed skillet to 330°F (165°C). Carefully fry the rice disks for approximately 2 minutes per side, until golden brown and crispy. Transfer to a paper towel-lined tray.

8. Prepare the tuna filling: Keep the fatty tuna cold and finely mince it using a sharp knife. Combine with lime zest, juice from half the lime, kosher salt, green onions, and optional masago.

9. Make the sauce: In a small bowl, whisk together the light soy sauce, lime juice, honey, and wasabi until smooth.

10. Assemble the burgers: Brush one crispy rice bun with wasabi sauce. Add half the seasoned tuna mixture, extra green onions, and half the sliced avocado. Sprinkle with salt and a squeeze of lime juice.

11. Finish and serve: Top with another crispy rice bun. Repeat to make the second burger. Serve immediately while the rice is crunchy.

Notes

  • Use sushi rice: Japanese short-grain rice provides the best sticky texture for forming rice buns.

  • Chill thoroughly: Refrigerating the compressed rice for at least 1 hour helps prevent it from falling apart during frying.

  • Maintain oil temperature: Keep the oil near 330°F (165°C) for an evenly golden crust.

  • Use properly sourced tuna: Purchase tuna intended for raw preparation from a reputable supplier. The term “sushi-grade” alone does not guarantee safety.

  • Customize the heat: Reduce or increase the wasabi according to your preference.

  • Make it gluten-free: Substitute regular soy sauce with certified gluten-free tamari.

  • Cooked alternative: Replace raw tuna with fully cooked salmon or tuna if preferred.

  • Serve fresh: Assemble immediately before eating for maximum crispiness.

  • Food safety: Keep tuna refrigerated until serving, and refrigerate cooked rice promptly during preparation. People at higher risk of foodborne illness should avoid raw fish

  • Prep Time: 25 minutes
  • Cook Time: 15 minutes
  • Category: Dinner
  • Method: frying
  • Cuisine: Japanese-Inspired Fusion

Nutrition

  • Serving Size: 1 burger
  • Calories: 865 kcal
  • Sugar: 16 g
  • Sodium: 2050 mg
  • Fat: 44 g
  • Saturated Fat: 8 g
  • Unsaturated Fat: 35 g
  • Trans Fat: 0 g
  • Carbohydrates: 93 g
  • Fiber: 6 g
  • Protein: 27 g
  • Cholesterol: 45 mg