Posted on November 6, 2021November 6, 2021 by Padraic GuilfoyleGuinness alcohol are proud 100% of their Irish barley is sustainably sourced.. guinnessVerifiedWe’re proud that 100% of our Irish barley is sustainably sourced, but we will never settle in pursuing a better future for our planet and society. Share this:TwitterEmailPrintRedditPinterestTumblrLinkedInPocketyahooFacebookLike this:Like Loading...