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There is also a sinister side to the popularity of Wasabi. It become the traditional condiment for sushi stands Centuries ago, as it was noticed that merchants who offered it with the raw fish has less cases of food poisoning then merchants who didn't. Modern Science has since confirmed that Wasabi contains a rather powerful bactericide, and some firms are seeking ways to include this active ingredient into toothpaste and mouthwash products...
Wasabi - Wikipedia, the free encyclopedia