Kettle foods contradicts their gluten policy on their own website. They process their nut butter on equipment shared with wheat and say on their site that the product is gluten free!
Their FAQ gluten free policy:
To make matters worse on their packaging they say “Processed on equipment shared with peanuts other nuts and seeds.” Nothing about gluten.
Their About Us section:
http://www.kettlefoods.com/about_us/
A final note, beware.

