Place the cooked rice in a large bowl and add the rice vinegar, sugar, salt, sesame oil, and soy sauce. Mix until all the ingredients are evenly distributed.
Divide the rice into four equal portions. Take one portion and form it into a ball. Flatten it slightly into a disc shape.
To make the Jack-O-Lantern face, press a small piece of kombu seaweed into the center of the disc for the mouth and two small pieces of carrot for the eyes.
Sprinkle the black and white sesame seeds over the onigiri to finish.
Repeat with the remaining portions of rice.
Interesting Facts
Onigiri are a popular Japanese food made from rice.
The Jack-O-Lantern Onigiri is a fun and festive way to celebrate Halloween.
Onigiri are a great way to use up leftover cooked rice.
The kombu seaweed and the carrots give the onigiri a fun Jack-O-Lantern face.