An curved arrow pointing right. The wasabi served alongside your sushi is most likely horseradish and mustard dyed green — unless you're in Japan. Produced by Emma Fierberg. Original reporting ...

genuine wasabi is actually a paler shade of green and has a grainy, gritty texture. Prepared horseradish is more paste-like and appears white or beige in color. Green food dye is simply added to ...

Narrator: Wasabi is a small green plant in the brassica family, that means it's related to many cheap and easy to find plants like horseradish, cabbage, or broccoli. But unlike these it's ...