Pop Up Onigiri MakerMake Onigiri for the whole family in one go! The Pop Up Onigiri Maker is a fun and easy way to make up to 6 onigiri at once. Simply fill, press, flip, then pop! How to use: Lightly rinse the mold (to prevent rice from sticking). Place on a clean surface, then fill with rice. Tamper down the rice using the lid. Then, take the rice filled mold, and pop out your perfect onigiri! Made in Japan.