Long black is a special type of coffee drink that is made by adding hot water to a shot of espresso. To create a long black, a small shot of espresso is made by pushing hot water through finely ground coffee beans using a machine called an espresso machine. This concentrated coffee is then poured into a cup and hot water is added on top. The hot water dilutes the espresso and creates a longer, smoother coffee drink similar to an Americano. It is usually served in a tall glass or cup and typically has a richer flavor and stronger aroma than other coffee drinks.