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I've been out of touch, so this may have already been covered but if not,
I'd like some scientific data about jerewsalem artichokes.  If memory
serves, they are the roots of a large flowering sunflower plant that has no
relationship to grasses and I just can't imagine how there can be any
gluten content.  Perhaps someone has assumed that because there is pasta
made with Jerusalem artichoke flour (but always containing some other flour
that makes it stick together - and usually THAT flour is regular wheat
flour) that the Jerusalem artichokes contain gluten.  I doubt that that is
the case.

Gayle K