Rinse the rice thoroughly and soak it for about 30 minutes.
Cut the mackerel into bite-sized pieces after cleaning.
Finely chop the onion and carrot.
Place the soaked rice and water in a pot, then add the prepared ingredients on top.
Season with soy sauce, cooking wine, and salt.
Cover with a lid and cook the rice.
Once the rice is cooked, mix all the ingredients together.