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Wasabi

Wasabi is a Japanese condiment made from the grated rhizome of a Brassicaceae plant, typically associated with sushi and sashimi.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Wasabi is a Japanese condiment made from the grated rhizome of a plant in the Brassicaceae family. It is commonly associated with sushi and sashimi and is known for its sharp, pungent heat. The term wasabi can refer both to the plant *Eutrema japonicum* and to the condiment itself.

Etymology and identity

Wasabi is commonly called Japanese horseradish in English, but it is a distinct plant species rather than true horseradish. The term can also refer to the condiment made from the grated rhizome.

Botany and origin

The plant belongs to the mustard family Brassicaceae and is native to Japan, the Russian Far East, and the Korean Peninsula. It grows naturally in stream beds and mountain river valleys in Japan.

Culinary use

The rhizome is ground into a paste and served as a condiment, especially with sushi and sashimi. Commercial products sold as wasabi may contain little or no authentic wasabi and instead use coloured horseradish.

Flavour and properties

Wasabi has a strong, volatile pungency that fades quickly after exposure to air. Its sharpness is often compared with horseradish or hot mustard, and it is often served with raw foods.

Key facts

  • Wasabi refers both to the plant and to the green paste made from its rhizome.
  • The plant is in the mustard family, alongside horseradish and mustard.
  • Its heat is mainly nasal and pungent, not like chilli peppers.
  • Authentic wasabi cultivation is limited due to specific growing requirements.
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Canadian context

Wasabi is widely familiar to Canadian readers through sushi restaurants, Japanese grocery products, and packaged condiments sold in Canada.

Frequently asked questions

What is wasabi?
Wasabi is a Japanese condiment made from the grated rhizome of a plant in the mustard family.
Is wasabi the same as horseradish?
No. Wasabi is a distinct plant, although its flavour and culinary use are similar to horseradish.
What does wasabi taste like?
It has a sharp, pungent heat that irritates the nose more than the tongue.
What foods is wasabi used with?
It is most commonly served with sushi and sashimi, and also appears in other Japanese dishes.
Where does wasabi grow naturally?
Wasabi is native to Japan and also occurs in the Russian Far East and the Korean Peninsula.

References

  1. Simple English Wikipediahttps://www.simple.wikipedia.org/wiki/Wasabi
    Supports: Basic description of wasabi as a spice, its strong flavour, and use with sushi.
  2. Wikipediahttps://en.wikipedia.org/wiki/Wasabi
    Supports: Scientific name, family, native range, and use of rhizomes as condiment.
  3. Merriam-Websterhttps://www.merriam-webster.com/dictionary/wasabi
    Supports: Definition as condiment prepared from the rhizome and relation to horseradish.
  4. Encyclopaedia Britannicahttps://www.britannica.com/topic/wasabi
    Supports: Plant family, native range, and cultivation limitations.
  5. Kikkomanhttps://www.kikkoman.com/en/cookbook/glossary/wasabi.html
    Supports: Culinary use, volatility of spiciness, and traditional pairing with raw foods.
  6. Japan Guidehttps://www.japan-guide.com/e/e2311.html
    Supports: Common culinary use, forms sold commercially, and note that many products use horseradish.