01 -
Rinse sushi rice with cold water until runoff is clear. Combine rice and water in a saucepan; bring to a boil. Reduce heat, cover, and simmer for 18 minutes. Remove from heat and let rest covered for 10 minutes.
02 -
In a small bowl, dissolve sugar and salt in rice vinegar. Gently fold mixture into hot rice using a paddle, ensuring each grain is coated evenly. Spread rice on a tray to cool to room temperature.
03 -
Moisten hands and press cooled rice into a 1.5 cm thick slab. Cut into small rectangles, approximately 5x2 cm. Arrange on parchment paper and freeze for 30 minutes to firm.
04 -
Heat 1 cm of vegetable oil in a skillet over medium-high heat. Fry rice rectangles until golden and crispy on all sides, about 2–3 minutes per side. Transfer to a wire rack to drain excess oil.
05 -
Dice ahi tuna into small cubes. Place in a bowl and add Kewpie mayonnaise, sriracha sauce, soy sauce, and lime juice. Mix gently to combine, then refrigerate until ready to assemble.
06 -
Slice avocado thinly. Cut jalapeños into thin rings. Set aside.
07 -
Top each crispy rice block with a spoonful of spicy tuna. Garnish with avocado slices and jalapeño rings. Serve immediately while rice is warm and toppings are fresh.