Ouzo 12 is an anise-flavored liqueur typical of Greek tradition, considered one of the most famous and widely consumed ouzos in the world. The name stems from a legend that, at the Kalogiannis distillery in Constantinople in 1880, the finest spirit was drawn from barrel No. 12, hence the name and the traditional recipe still used today. Ouzo is clear and transparent when poured neat, but becomes milky when diluted with water or ice—a typical phenomenon caused by the anethole in the anise.