Wash rice until water looks clear.
Cook rice with water until soft and sticky.
Mix vinegar, sugar, and salt in a small bowl.
Add this mix to the rice and let it cool.
Mix mayo and sriracha to make spicy sauce.
Cut avocado, cucumber, and grate the carrot.
Shred the crab meat and slice the green onion.
Put cooked rice into serving bowls.
Add crab, avocado, cucumber, and carrot.
Add seaweed strips and sprinkle sesame seeds.
Drizzle with spicy mayo and soy sauce.
Add green onions, wasabi, or pickled ginger if you like.