Cook sushi rice and let it cool slightly
Cut fresh sushi-grade fish or tofu into bite-sized cubes
Slice cucumber, avocado, scallions, and seaweed
Mix soy sauce, sesame oil, and rice vinegar
Add the fish or tofu to the sauce and gently toss
Place rice in a bowl
Top with the marinated fish or tofu
Add cucumber, avocado, scallions, and seaweed
Sprinkle sesame seeds and furikake
Serve immediately