Does wasabi powder expire?

[Alice Ringer]

Hi all!

I was wondering if any one knew what the shelf life for wasabi powder
is. Since it is a dried product, I'm guessing a pretty long shelf life.
I've still got a little can that's about two years old (I can't afford
to make sushi often). The last time I used it (months ago), the flavor
was still about the same. Do you think it's still ok, or should I just
throw it out? (There's no date on the can, of course)

[Satoru Miyazaki]

In article <3146C3...@dons.ac.usfca.edu>, dong...@dons.ac.usfca.edu
says...

I would probably use it. Dried stuff lasts long. I normally keep an opened
can in a refrigerator or freezer. A better kind is wasabi paste that comes
in a tube and has a defined expiration date, but it does contain a small
portion of genuine grated wasabi in addition to usual horseradishes. If it
were an unopened can, keeping it in a freezer would go almost indefinitely.
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Satoru Miyazaki 米国 美国
Pesticide Research Center ミシガン州立大学 Forschungszentrum 密西根州立大学
Michigan State University 農薬研究所 fuer Pestizide 農葯研究中心
U.S.A. 宮崎覚 Staatsuniversitaet
miya...@pilot.msu.edu von Michigan

[WILF1]

It will go bad after a period of some years. I now keep it in a plastic
bag in thr fridge.

Mike

[RockConsul]

My experience is that if the powder is kept in an airtight container it
keeps quite awhile. Might as well mix up a small batch and try it.
Nothing to lose, eh? However, I would suggest purchasing prepared wasabi
in a tube. A company called S&B makes a good, authentic product. It's
avail. @ Japanese markets. Good luck and clear sinuses to you.