Quote Originally Posted by OakLeaf View Post
It just breaks the cell walls, is all, doesn't "destroy" anything else - if you plan to grate it before serving, then cell walls aren't necessary. I often use frozen ginger in Indian dishes where it's grated then fried, and don't notice a difference in the flavor. Ginger tends to sit a long, long time between orders in our local grocery, so I like to buy a lot when it's fresh and freeze it.

Reason I ask, is it's a long drive to the Asian market in the "big city" and they don't always have fresh wasabi when I go there. I might be able to get it once or twice a year tops. Eden Foods has powdered dried real wasabi, but obviously fresh is way better.
The same company that provides the fresh wasabi roots does little tubes of grated wasabi - they sell it frozen, so it sounds like grated at least it will keep OK frozen. It only keeps for 30 days after you open it though. They don't mention if you can re-freeze it. Looking at the site a bit more it looks like they've stopped actually growing wasabi . They used to even sell seeds and wasabi plants along with grow your own instructions. Makes me wonder if I'll even be able to get fresh roots any more.