Wasabi is a member of the cabbage family that grows naturally along stream beds in mountain river valleys in Japan. Its root is used as a strong, mustard-hot spice that produces vapors that burn the sinus cavity rather than the tongue. Wasabi paste is often served with sushi and sashimi, but because true wasabi is so expensive, most American and Japanese sushi bars serve imitation wasabi made of what? Discuss
Source: The Free Dictionary