By the way, I learned some time ago that the wasabi we eat outside of Japan is not the real thing. Wasabi is a root plant that grows wild on river banks in Japan or is cultivated in running water for its roots, but it is relatively difficult and expensive to cultivate. What we eat and buy in our supermarkets, even if the label says wasabi, is a mixture of horseradish, mustard and green food colouring.
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Image credits: All photography by me