Gather ingredients: cooked sushi rice (or short-grain rice), rice vinegar, sugar, salt, nori sheets, sesame oil (optional), sesame seeds (optional), soy sauce (for serving)
Cook rice: cook short-grain rice and let it cool slightly
Season rice: mix rice vinegar, sugar, and salt; fold into warm rice until glossy
Shape: press small portions of seasoned rice into flat, puck-shaped rounds (about 2–3 inches / 5–8 cm)
Prepare nori: cut nori into small pieces sized to wrap each rice puck
Assemble: lightly oil the rice (optional), place nori on top or wrap with nori to cover one side
Optional toppings: sprinkle sesame seeds if desired
Serve: serve immediately with soy sauce for dipping or on the side