Wasabi is primarily used as a condiment to accompany sushi with shaved ginger and is potent and cleanly spicy. The flavor of wasabi is similar to that of horseradish in that it cools faster than spices that derive their heat from oils that linger on longer. Wasabi also differs in its heat and effects in that it is primarily felt in the nasal passages. | Wasabi is most commonly used as a condiment and ingredient in sushi. Spicy and clean flavored.