This colorless oil is responsible for the pungent taste of mustard, radish, horseradish, and wasabi. In Japan, geoduck is prepared as raw sashimi, dipped in soy sauce and wasabi. It is also uncouth to mix "wasabi" (green horseradish) into the soy sauce dish. Allyl isothiocyanate is also responsible for the pungent taste of horseradish and wasabi. It is often served with pickled ginger ("gari"), "wasabi", and soy sauce. An imitation "wasabi" ("seiyo-wasabi"), made from horseradish, mustard powder and green dye is common. The Japanese botanical name for horseradish is , or "Western wasabi". This allows the wasabi to infuse the soy sauce more subtly. Wasabi and scallions are often mixed into the "tsuyu". In English this word is translated as "wasabi" or "Japanese horseradish". Kettle Cooked Wasabi Ginger was chosen as the winner. Izu is noted for its production of "wasabi" and "shiitake". Other restaurant chains became involved, including Franco Manca, Tortilla, and Wasabi. Smith returned to film acting in 2003 with the comedy film "Wasabi Tuna". The primary difference between the two is color, with Wasabi being naturally green.