MASU(a square wooden box) has a long history as a traditional Japanese measuring tool, dating back to the 8th century. At that time, it was used to measure rice and sake, and even today it is used when drinking sake because the scent of the wood enhances the flavor. In addition, the word “Masu(increase)” is associated with “increasing happiness” and “increasing prosperity,” making it a popular gift for weddings and other celebrations.