Guinness, produced by Diageo, is facing supply limitations due to a surge in demand, particularly noted in Great Britain ahead of Christmas. Despite operating at full production capacity, Diageo has imposed order limits for pubs. The beverage has gained popularity among women and younger demographics, further exacerbated by recent rugby events. Diageo is enhancing marketing efforts, partnering with influencers and celebrities like Lewis Capaldi and Jason Momoa to boost recognition. Surprisingly, while overall beer consumption has dipped, Guinness keg sales have surged over 20%.