01 - Place the sushi rice in a fine-mesh strainer and rinse under cold running water, gently swirling with your hand, until the runoff runs completely clear. Transfer the rice to a rice cooker or saucepan, add 2 cups of water, and cook according to the manufacturer's instructions until tender and all liquid is absorbed.
02 - While the rice is still hot, combine the rice vinegar, sugar, and salt in a small microwave-safe bowl. Heat in the microwave for about 20 seconds, stirring until the sugar and salt fully dissolve. Pour the seasoned vinegar over the hot rice and fold gently using a cutting motion—avoid mashing the grains. Allow the rice to cool to room temperature.
03 - Shred or chop the imitation crab into bite-sized pieces. Dice the avocado and seeded cucumber into uniform cubes. Slice the green onions thinly on a bias. Cut the nori sheets into thin strips using scissors or a sharp knife.
04 - In a small bowl, whisk together the Japanese mayonnaise and sriracha until smooth and well combined. Adjust the amount of sriracha to your preferred heat level.
05 - Divide the seasoned sushi rice evenly among 4 bowls. Artfully arrange the shredded crab, diced avocado, diced cucumber, nori strips, and pickled ginger over the rice in sections. Drizzle with the spicy mayo and sprinkle generously with toasted sesame seeds and sliced green onions.
06 - Serve immediately with soy sauce and wasabi on the side for dipping and seasoning to taste.