When used to refer to any generic alcoholic mixed drink, cocktail may mean any beverage that contains three or more ingredients if at least one of them contains alcohol.
When a mixed drink contains only a distilled spirit and a mixer, such as soda or fruit juice, it is a highball; many of the International Bartenders Association Official Cocktails are highballs. When a cocktail contains only a distilled spirit and a liqueur, it is a duo and when it adds a mixer, it is a trio. Additional ingredients may be sugar, honey, milk, cream, and various herbs