Saki Yoken "Onigiri Siu Mai Bento" (rice ball siu mai lunch box) The contents of the standard siu mai lunch box, such as "siu mai with meat sauce onigiri," are made into an onigiri (rice ball)!
Saki Yoken has introduced "Onigiri Siu Mai Bento". The "Onigiri Siu Mai Lunchbox" is a combination of the classic "Siu Mai Lunchbox" with a side dish such as "Siu Mai with Meat An Onigiri" as an ingredient of "Onigiri".