How much should I tip at a bar?

The answer

There is no legal amount: tipping is a custom, and expectations vary by place and by the type of venue. In the United States, bar workers often rely on tips as a major part of their income, so guests customarily leave a tip for good service. Many people tip a modest amount per drink for simple orders and more for complicated cocktails or exceptional service. Check your receipt, since some venues add a service charge for groups, and ask a local if you are unsure.