<<Disclaimer: Verify this information before applying it to your situation.>>

Don Kasarda wrote: "To the best of my knowledge as a chemist, there is
not any evidence that white vinegar, or any vinegar for that
matter--with the possible exception
of barley malt vinegar--contains gluten."

<snip>

I wish my intestines would read those chemistry manuals! White distilled
vinegar- even in very small quantities makes me sick with a definite
Celiac reaction.
YMMV- your mileage may vary.

Fran/Oregon