The 'Amouranth's Vaginal Yeast Beer' meme stems from a 2023 collaboration between the famous Twitch streamer Kaitlyn 'Amouranth' Siragusa and the Polish brewery The Order of Yoni. The announcement that the beer would be brewed using 'vaginal lactic acid' from the streamer sparked immediate internet frenzy, ranging from disgust to morbid curiosity. In meme culture, it serves as a peak example of 'simp culture' and the extreme lengths of influencer merchandising. The template is often used to comment on bizarre marketing stunts, parasocial relationships, or the strange evolution of internet celebrity products, joining the ranks of Belle Delphine’s GamerGirl Bath Water in the hall of internet infamy.