Mostly wasabi paste offered in restaurant is actually an alternative derived from non wasabi plant (fake)!
Yes, it’s true. Over 95% of wasabi served in sushi restaurants does not contain any real wasabi. Most fake wasabi is made from a blend of horseradish, mustard flour, cornstarch and green food colourant. This means that most people who think they know wasabi have actually never tasted the stuff!
What is real wasabi?
Real wasabi paste is made by grating the wasabi rhizome (the subterranean stem of the plant). When you grate wasabi, the volatile compounds that give it its distinguished taste begin to break down within minutes. That’s why real wasabi paste has the best taste when it’s really fresh. Wasabi is also considered difficult to grow and that makes it an expensive plant. The fake wasabi paste on the other hand is cheap and has a long expiration date.