Wasabi (Japanese: わさび, 山葵) is a member of the cabbage family. Also known as Japanese horseradish, its root is used as a spice and has an extremely strong flavor. It's actually rare to have real wasabi since its prices is often prohibitively expensive and most wasabi consumed outside Japan (and even in Japan) is imitation.

Wasabi is generally sold either in the form of a root, real wasabi, which must be very finely grated before use, or as a ready-to-use paste. Once the paste is prepared it should remain covered until served to protect from loss of flavor. The plant grows naturally along stream beds in mountain river valleys in Japan.