Bloodwine was a highly popular Klingon alcoholic beverage, often consumed as part of celebratory occasions.
House Ozhpri was considered one of the finest vinters of bloodwine on Qo'noS. (TNG novellas: The Brave and the Bold, Book Two, The Final Artifact)
Quark drank bloodwine, along with several other varieties of alcohol, with Stumpy Strope during his last visit to Stumpy's Bar. (DS9 reference: Legends of the Ferengi)