A bartender (barman, barkeeper, barmaid, or tapster, among other names; a particularly experienced bartender specializing in cocktails is sometimes referred to as a mixologist) is a person that serves beverages behind a bar in a bar, pub, tavern or similar establishment. This usually includes alcoholic beverages of some kind, such as beer, both draft and bottled, wine and/or cocktails, as well as soft drinks or other non-alcoholic beverages. He/She "tends the bar". A bartender may own the bar they tend or be simply an employee. Barkeeper carries a stronger connotation of being the purveyor, i.e. owner. In addition to their core beverage-serving responsibility, bartenders also: take payment from customers (and sometimes the waiters or waitresses), maintain the liquor, cocktail garnishes, glassware and other supplies or inventory for the bar (though some establishments have barbacks who help with these duties). In establishments where cocktails are served, bartenders are expected to be able to properly mix hundreds to thousands of different drinks.