The truth about wasabi
Sushi wouldn't be the same without wasabi. But odds are that even if you have dined at a nice sushi restaurant, you probably haven't had real wasabi.
That green paste may have a very real, very spicy kick, but it likely is made from a European horseradish.
Speaking of Chemistry compares the real deal with the commonly used substitute found in most sushi restaurants, and explains the chemistry behind wasabi's burn.