Wasabi or Japanese horseradish is a root plant with a pleasant aroma and a sharp, fiery flavour. It became popular in Japan in the early 17th century as an accompaniment to sushi. Wasabi is available fresh, and can be grated like horseradish, as a paste or in powder form. When used for seasoning, it stimulates the appetite and is also known to prevent food poisoning. View our wasabi page for more information.