That little green blob of spicy paste beside your sushi and sashimi has an amazing backstory. The notoriously fussy plant is grown in the mountains of Taiwan (special shoutout to Chiayi County). It arrived in Alishan with the Japanese colonists and their forest railway and flourished in the cool mountain air. After disappearing for a time, it has recently made a comeback. Listen to learn the history of wasabi and find out whether you’ve been eating the real deal or a fake sauce.