Cook the rice

• Cook the sushi rice in the hot water for 10-15 minutes.
• Let it cool in a bowl, then mix in the rice vinegar.

Make the spicy tuna mixture

• In a bowl, mix the tuna with mayonnaise, sriracha and chopped red onion.

Prepare the sauce

• Combine the mayonnaise and soy sauce in a bowl.

Build the onigirazu

• Place a nori sheet on a flat surface and spread a small handful of rice in the center.
• Add tuna mixture, sliced cucumber, a dollop of cream cheese, avocado slices, more tuna, a drizzle of sauce and carrot slices.
• Top with another small handful of rice.

Wrap and shape

• Fold the four corners of the nori sheet towards the center to wrap the filling.
• Place another nori sheet on top and flip it over.
• Wrap tightly with plastic wrap and shape it into a burger.

Serve

• Cut in half and enjoy.