Wasabi

Wasabi

       A wiki link on the subject can be found at:  http://en.wikipedia.org/wiki/Wasabi

Even the horseradish based condiment with green food coloring is often quite good, too.

Wasabi most people say will open up their sinuses, too, though the experience is quite burning.

Many USA people who eat sushi these days will often dip their meal in a concoction of soy sauce and wasabi (and maybe some ginger), and that is pretty good, too.