I had my first taste of real wasabi a few years back at the Japanese food expo. I got in because of my friend's restaurant and was there with the rest of the food professionals. A vendor was set up with tastes of his wasabi product, sold frozen to restaurants. He had it side by side with fresh grated wasabi and the powdered stuff. Wow the real was good, even frozen/defrosted. He ended up giving me a pack and I have worked through it gingerly (pun intended) as I prepare sushi at home.
But now I need a refill. Does anyone know of a source where the real stuff can be procured? Fresh root with a grater would be one option, the frozen pre-grated product would be fine as well.