Wasabi is a special seasoning unique to Japanese cuisine. The Wasabi root is peeled and grated for the seasoning of many different dishes. Wasabi is difficult to buy in fresh form and is expensive so it is most often used as a paste or powder.
It should be used as a condiment for Sushi, Sashimi, and chilled Soba Noodles. It has an intensely hot flavour, so please use it sparingly.