Creating Crispy Rice Spicy Tuna is straightforward if you follow these simple steps:

1. Cook the Rice: Rinse the sushi rice under cold water until the water runs clear. Combine with the 2 ½ cups of water in a rice cooker or pot. Cook according to the rice cooker’s instructions or bring to a boil, then reduce to low heat, cover, and simmer for about 15 minutes.

2. Season the Rice: Once cooked, transfer the rice to a large bowl. In a small bowl, mix the rice vinegar, sugar, and salt until dissolved. Gently fold this mixture into the rice, being careful not to crush the grains.

3. Cool the Rice: Allow the seasoned rice to cool to room temperature. This will make it easier to shape.

4. Form the Rice Cakes: Once cooled, wet your hands and take a small amount of rice to form into rectangular cake shapes, about 1-inch thick. Place them on a parchment-lined tray.

5. Fry the Rice Cakes: In a skillet, heat vegetable oil over medium-high heat. Once hot, carefully add the rice cakes and fry until golden brown and crispy on both sides, about 2-3 minutes per side. Remove and drain on paper towels.

6. Prepare the Spicy Tuna: In a mixing bowl, combine the diced tuna, mayonnaise, and sriracha sauce. Adjust the amount of sriracha according to your heat preference. Mix until well combined.

7. Assemble the Dish: Top each crispy rice cake with a generous spoonful of the spicy tuna mixture.

8. Garnish: Sprinkle with sesame seeds and chopped green onions. Add avocado slices if desired.

9. Serve Immediately: Enjoy the crispy texture while it lasts!

These steps will guide you in creating this incredible dish effortlessly.