Be sure to have a glass of water nearby in case you put just a little too much in your soy sauce or on your sushi. Purchase powdered wasabi in an Asian food store or supermarket. Mix equal parts powdered wasabi and water until the mixture is pasty. Cover the container for 10 minutes. Use the wasabi when making sushi.
Some people put a little wasabi in their soy sauce for dipping sushi, as well.
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