Creating Crispy Rice Tuna is a straightforward process if you follow these steps:

1. Prepare the Rice: Rinse the sushi rice under cold water until the water runs clear. This removes excess starch.
2. Cook the Rice: In a medium saucepan, combine the rinsed rice and water. Bring to a boil, then reduce to low heat and cover. Cook for about 18-20 minutes until the rice is tender and the water is absorbed.
3. Season the Rice: In a small bowl, mix rice vinegar, sugar, and salt until dissolved. Stir this mixture into the cooked rice and let it cool.
4. Shape the Rice: Once the rice has cooled, lightly oil your hands and form the rice into rectangular patties, about 2 inches wide and ½ inch thick.
5. Fry the Rice: Heat vegetable oil in a skillet over medium-high heat. Fry the rice patties until golden brown and crispy on both sides, about 2-3 minutes per side. Remove and drain on paper towels.
6. Prepare the Tuna: In a bowl, combine the diced tuna, soy sauce, sesame oil, and chopped green onions. Mix well to coat the tuna evenly.
7. Assemble the Dish: Top each crispy rice patty with a spoonful of the tuna mixture. Add a slice of avocado on top if desired.
8. Add Optional Sauces: Drizzle with wasabi and sriracha for an extra kick, if you like.
9. Garnish: Sprinkle sesame seeds over the top for added flavor and presentation.
10. Chill and Serve: Let the assembled Crispy Rice Tuna chill in the refrigerator for about 15 minutes before serving.

By following these steps, you’ll create a dish that’s sure to impress!