From Golden Bay, New Zealand
You probably have not tasted real wasabi before. It is not as hot as the artificial pastes and has much more plant flavour. Wasabi titillates the back of your mouth and nasal area and has a hit but does not linger.
Wasabi root is incredibly fickle and loses its pungency within 15 minutes of being grated.
A tube of ‘Wasabi Japanese Horseradish’, commonly found in supermarkets / sushi bars contains: horseradish, lactose, sorbitol, corn oil, salt, water, artificial flavour, xanthan gum, turmeric, artificial colour. Not a shred of wasabi at all!