Wasabi
Eutrema japonicum (Miq.) Koidz.
Wasabi (Eutrema japonicum) is a genuinely rare, difficult-to-cultivate plant native to Japanese mountain streams, whose grated rhizome produces the true wasabi condiment.
Last reviewed August 25, 2026
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Is Wasabi safe to use?
Very well tolerated in normal condiment amounts. As a cruciferous relative of horseradish and mustard, similar general cautions apply at concentrated or large intake — moderate use during pregnancy, and awareness of the same mustard-oil-type compounds. If you're uncertain whether a "wasabi" product is true wasabi or a horseradish-based substitute, check the ingredient list — true wasabi is more expensive and far less commonly available than the substitute.
This is educational information, not medical advice. See our full Disclaimer before use.
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