Is Sauer Frau gluten-free and non-GMO? Sauer Frau Classic and Bavarian with Caraway Seeds are gluten-free and non-GMO. Sauer Frau Craft Beer Mustard, however, is not because of the beer used in the mustard. By kenk1107|2020-11-03T21:37:32-05:00May 1st, 2020|0 Comments Share this with a friend! Chose your platform. FacebookTwitterLinkedInRedditWhatsappTumblrPinterestVkEmail About the Author: kenk1107 Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.