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 ...

The rule of thumb 'recipe' for wasabi happens to involve horseradish (typically European), in its powdered form, mixed in with hot mustard, sweeteners and that lush green food colouring.

mustard, and food colouring. True wasabi, Wasabia japonica, is delicate, complex, and almost floral in its spice.” “Wasabi is celebrated for its hot, earthy flavour that lends an interesting ...