A lungo is a type of espresso that uses more water and a longer extraction time than a regular espresso. This results in a less concentrated coffee with a less intense flavor, but a slightly larger volume. The word "lungo" means "long" in Italian, referring to the longer extraction time and the volume of the finished drink. A typical serving of lungo coffee is about 2 ounces or 60ml, which is twice the size of a typical espresso. To make lungo coffee, you need to grind the coffee slightly coarser than you would for an espresso. Lungo coffee is not a different type of coffee drink, but rather another drink that comes under the "espresso" umbrella. It is worth noting that a lungo is different from an Americano or a long black, which are made by adding hot water to a regular espresso.