<<Disclaimer: Verify this information before applying it to your situation.>> Susan, Many peanut butter contain icing sugar which makes them non GF. Such is the caxe for instance with Squirrel extra smooth and extra crunchy. Hope this help. take care, Mireille (Gaspesie, Quebec) >I thought that Jif Peanut Butter was GF, must be a mystery additive? Anyone >know? >Susan B. Dean