Begin by rinsing the sushi rice under cold water, using a fine-mesh sieve or bowl. Continue rinsing until the water runs clear.
In a medium saucepan, combine the rinsed rice and water. Place it over high heat and bring to a vigorous boil. Once boiling, reduce the heat to low, cover the pot, and simmer for approximately 15 minutes or until all the water has been absorbed. After cooking, remove the pot from heat and let it stand, still covered, for an additional 10 minutes to steam.
While the rice rests, prepare the spicy tuna mixture. In a mixing bowl, gently combine the diced sushi-grade tuna, mayonnaise, sriracha, and soy sauce. Stir delicately to ensure the tuna is well-coated without breaking it down too much.
Once the rice has rested, use a fork to fluff it up gently, then season it with a pinch of sea salt.
To assemble your sushi bowls, start by adding a generous scoop of the warm sushi rice as the base in each bowl.
Pile on the spicy tuna mixture right in the center of the rice, followed by artfully arranged slices of avocado, julienned cucumber, and grated carrot.
Finish off by scattering the sliced green onions and nori strips over the top.
Sprinkle sesame seeds generously across the bowls for added crunch and visual appeal.
Serve each bowl accompanied by a side of pickled ginger.
Notes
Use deep bowls to create a hearty appearance and layer ingredients for visual appeal.