... root. Like horseradish, it is a root, or , and it is grated or sliced for use in cooking. Wasabi is ... for eating raw by washing it, trimming any bumpy or scaly parts off with a sharp knife, and then grating it ... . The traditional use is to eat it with sushi or sashimi, but it also may be used to flavor ... mustard or , as a meat sauce, or in salad dressings. For those who simply ...