Our guest is Yuichiro Murai, the 29th generation of Kojiya Sanzaemon based in Aichi Prefecture, Japan.
Koji, which is also called the national mold of Japan, has been used to make a majority of anything delicious in Japanese cuisine, such as miso, soy sauce, sake, and shochu. In the last decade or so, koji has become a culinary keyword, especially among forward-minded top chefs like Rene Redzepi of Noma in Denmark, and Feran Adria in Spain.