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Freshly Grated Wasabi
A bright, herbaceous heat that clears quickly rather than lingering the way chili heat does.
Lens analyzedFreshly grated wasabi is the rhizome of a Japanese plant, grated on a sharkskin grater (oroshigane) into a pale green paste and served alongside sushi and sashimi in place of the horseradish-based paste most restaurants use. Real wasabi carries a milder, more fleeting heat than the green paste most people know.
Where it comes from
Wasabi grows along Japanese mountain streams and has always been difficult to farm at scale, which is why authentic fresh wasabi stays expensive and rare even in Japan. Most wasabi served outside high-end sushi restaurants is actually horseradish dyed green, a substitution that became standard once demand outpaced the real plant's limited supply.
Buying it
Fresh wasabi rhizome should feel firm with no soft spots, and it's best grated only right before serving since its heat fades within about fifteen minutes.
Storing it
Keep the whole rhizome wrapped and cool, away from direct heat, and grate only what you need since the flavor fades fast once prepared.
Keeps about 1 year in the pantry.
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