Prepare the rice.
Cut the vegetables such as avocado, cucumber, and carrot into cubes.
Cut the tuna or salmon sashimi into bite-sized pieces.
Mix soy sauce, sesame oil, and lemon juice to make the sauce.
Put the rice in a bowl and add the prepared vegetables and fish on top.
Evenly drizzle the sauce over everything.
Add your favorite toppings (such as seaweed, sesame seeds, etc.) to finish.