Ouzo is a spirit exclusive to Greece, whose history is lost in the depths of time.
Ouzo is a mixture of ethanol (alcohol), water and various aromatic herbs, always including anise. Other substances used to aromatize it are fennel, star anise, mastic, cinnamon, clove, coriander, angelica root, linden blossom, cardamom, mint, and others.
Ouzo seems to have its origins in the Greek regions of the Byzantine Empire, but became widely known thanks mainly to refugee distillers from Asia Minor.
Serve ouzo “à la Greek” with ice and a little cold water in a tall glass before dinner, to awaken the appetite of your guests.
Source: My Little Greek Foodbook