Wasabi (山葵, わさび) is a Japanese condiment that comes from a root, similar to horseradish. It has an intensely hot flavor which is more reminiscent of hot mustard than a chili pepper. It is commonly served as a little lump with sushi, where it is mixed into soy sauce and serves as a dipping sauce.
Wasabi is sold either as a root, as a powder, or as a pre made paste. The paste is the easiest to find, and can be found in regular grocery stores.Buy on Amazon