Sambuca in the context of "Ouzo"

The ouzo effect (/ˈuːzoʊ/ OO-zoh), also known as the louche effect (/luːʃ/ LOOSH) and spontaneous emulsification, is the phenomenon of formation of a milky oil-in-water emulsion when water is added to ouzo and other anise-flavored liqueurs and spirits, such as pastis, rakı, arak, sambuca and absinthe. Such emulsions occur with only minimal mixing and are highly stable.

Rakı, Türk Rakısı or Turkish Raki (/rɑːˈkiː/, Turkish pronunciation: [ɾaˈkɯ] ) is an alcoholic beverage made of twice-distilled grape pomace and flavored with aniseed. It is a national drink of Turkey, it is especially popular in the coastal regions. Among drinkers, it is popular in Turkic countries and Caucasian countries as an apéritif. It is often served with seafood or meze. It is comparable to several other anise-flavored liqueurs such as pastis, ouzo, sambuca and arak. The alcoholic content of rakı must be at least 40% according to Turkish standard. The largest producer of raki is Diageo; Yeni Rakı is the largest brand.

In many East Mediterranean and Balkan countries, the term raki is widely used to describe similar distilled alcoholic beverages. This shared terminology dates back to the Ottoman Empire, where "raki" became a generic term for distilled spirits. During Ottoman rule, the word spread across the empire's territories. In many of these regions, the term raki or rakia is still used to describe grape-based pomace brandies or other spirits, often with regional variations in production methods and flavour profiles. For example, in Turkey, rakı is flavoured with anise and is distinctively served diluted with water, creating a milky-white appearance. Similarly, in the Balkans, rakija (or its liguistic variants such as ракия in Bulgarian, ракија in Serbian, and rakija in Croatian) is a general term for fruit-based brandies, with local variations like plum, pear, or apricot based liquors.