wasabi

n. Japanese plant (of the watercress family) that has a thick green root; green root of the wasabi plant; Japanese condiment made from the spicy greenish root of the wasabi plant that tastes like horseradish and is used in cooking as a powder or paste, Japanese horseradish

Wasabi (, (originally written )) ; Wasabia japonica, Cochlearia wasabi, or Eutrema japonica) is a member of the cabbage family. Known as Japanese horseradish, its root is used as a spice and has an extremely strong flavor. Its hotness is more akin to that of a hot mustard than the capsaicin in a chili pepper, producing vapors that irritate the nasal passages more than the tongue. The plant grows naturally along stream beds in mountain river valleys in Japan. There are also other species used, such as W. koreana, and W. tetsuigi. The two main cultivars in the marketplace are W. japonica var. Duruma and Mazuma, but there are many others.
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n. wasabi, Japanese herb (of the mustard family); root of said herb, Japanese condiment made from the spicy greenish root of said wasabi plant

Also called Japanese horseradish, a pungent green paste made from a rhizome of the watercress family.

wasabi