At least two (maybe three) varieties of Boulder Canyon malt vinegar and sea salt chips are labeled gluten-free and/or erroneously contain the Gluten Free Certification Organization (GFCO) Certified Gluten-Free mark (i.e. they were never certified by GFCO) and include the ingredients malt vinegar and malt extract. A pdf of the full report is available at https://www.glutenfreewatchdog.org/blog/Gluten-Free-Product-Alert-Boulder-Canyon-Malt-Vinegar-Chips/32
Gluten Free Watchdog Product Alert: Boulder Canyon Malt Vinegar Chips