The term Tapster is a synonym for both a Barkeep and a BARTENDER. A Barkeep is a person who works in a bar, tavern, or pub and is responsible for serving drinks to customers. A BARTENDER is a person who works in a bar, tavern, or pub and is responsible for mixing and serving alcoholic beverages. Both Barkeeps and Bartenders are responsible for maintaining the cleanliness of the bar area and ensuring that customers are served in a timely manner.