Wasabi Wasabi is the spice produced from the rhizomes of the Eutrema japonicum, a rare semi-aquatic, evergreen herb in the mustard family (Brassicaceae). Learn more about wasabi here. Related Articles: What Are Spices and Herbs?What Can Spices and Herbs Do?How is Wasabi Produced?WasabiGlossary: RhizomeGlossary: EvergreenGlossary: SpicesMakrut Lime LeafGlossary: CruciferGarlic« Back to Glossary Index