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

This morning I emailed the makers of White Wave as someone on this list
requested.  This is their response.

>Thank you for your interest in White Wave.  Our Vanilla and Chocolate Silk
>does contain a wheat and/or corn based vanilla extract.  Our Plain Silk
>contains a wheat and/or corn based vanilla extract in the natural flavoring.
>The gluten in these products does exist but it is virtually undetectable.  You
>should contact your health care professional to discuss whether or not you
>may consume vanilla extract, since gluten sensitivity can vary from person to
>person.  I hope this information helps you.  Best regards from TofuTown.