In-Depth Explanation
True wasabi (Wasabia japonica) is one of the most difficult plants to cultivate — it requires cool, shaded, running water and takes 18-24 months to mature. Fresh wasabi is grated on sharkskin (oroshigane) just before serving, as its volatile compounds dissipate within 15-20 minutes. The flavor is distinctly different from horseradish-based substitutes: it has a clean, herbal, slightly sweet heat that dissipates quickly rather than lingering. Real wasabi complements the delicate flavors of sashimi without overwhelming them. A fresh wasabi rhizome can cost $50-100, explaining why most restaurants use the far cheaper horseradish-based substitute.
Explore Related Products & Guides
Related Terms
Nigiri
A style of sushi consisting of a small mound of hand-pressed vinegared rice topped with a slice of raw fish or other ingredient. The simplest form of sushi, relying entirely on the quality of fish and rice.
Sashimi-Grade
A designation indicating fish has been frozen to FDA-recommended temperatures (-31°F for 15 hours or -4°F for 7 days) to eliminate parasites, making it safe for raw consumption. Also implies superior freshness and handling.