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 - The Brave and the Bold, Book Two novella: 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)