Could spicy wasabi boost your brain power? 00:57 Tokyo — A study conducted in Japan suggests there's more to sushi than just a healthy dose of fish and seaweed. Researchers at Tohoku University ...

Did you know that most of the wasabi on the market isn't the genuine article? We asked an expert to help us identify the real thing.

According to Taste Atlas , most wasabi (Wasabia japonica) served globally is not authentic - it's a blend of horseradish, mustard, and green food colouring.

Wasabi paste — or more simply, "wasabi" — is produced by grating the stem of the wasabi plant (the wasabi rhizome). When this stem is grated, the plant's components break down almost ...