Anyone who’s imbibed a glass of ouzo—the licorice-flavored spirit that is practically the national drink of Greece—may be familiar with how it turns cloudy when the liquor is mixed with water. But there are still some mysteries about how such mixed liquids behave.
Those who like to chug a little ouzo, or perhaps absinthe, will know how the liquor clouds up when water is added to it. What causes two clear liquids to form a cloud in the glass? Chemistry gets opaque with the Ouzo Effect.