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L' Espresso (http://www.espressonline.it/) is the name of an Italian newspaper.
Espresso is a strong, flavorful coffee beverage brewed by forcing hot water through finely ground dark-roasted coffee beans. In Italian, espresso means "very quickly", and refers to the time it takes to make. The term "expresso" — used often in the United States, even occasionally on menus — is not correct.
Espresso differs greatly from the common drip brewed coffee drink in its thick concentrated consistency, and robust flavor. Due to its potency, straight espresso (espresso served without sweetener or milk, analogous to black coffee) is considered by some to be an acquired taste, and is served in small amounts called shots. Many coffee aficionados order their single or double with a little glass of cold water to clear the palate. Because the espresso reacts quickly with oxygen, it should be consumed right after brewing.
Espresso is often used as the foundation for other drinks, such as lattes, cappuccinos, mochas, and many more.
A key component in the flavor of espresso is a golden foam composed of oils, proteins, and sugars, called crema which floats on the surface.
Espresso beans
Espresso is usually derived from a certain type of coffee bean; Coffea arabica, commonly known as Arabica, but the other variety, Robusta, is also used in some espresso blends. Arabica trees require more care in growing, and are therefore more expensive. Arabica beans are considered to be superior to the more common Coffea canephora ("Robusta") beans, which are typically used for filler in commercial drip brew coffee. The roast of the beans varies from dark to light, depending on the desired taste. For making espresso, the beans are ground very finely, unlike coarser drip-style grounds. The grind is achieved using a burr grinder, a type of grinder that uses two flat or conical burrs to grind the coffee to a fine even powder without heating it.
Brewing process
 A personal espresso machine The process of making espresso is virtually an art form, and people who have mastered their technique are referred to as "baristas", masters of many nuances which can be altered to affect the final product. High quality espresso machines can be too expensive for most people.
Personal techniques for making espresso vary and depend upon the machine used.
First, a metal "basket" with a perforated bottom is filled with coffee powder, and pressed down with a tamp to form a "puck" at the bottom of the basket. The basket is fitted to the espresso machine in a sealed holder, which directs the coffee into the mug. Heated water in a pressure-sealed tank is pumped through the compressed coffee and into the cup. For more specific details on espresso brewing techniques, see espresso machine.
Italians, who invented espresso, insist that there are four Ms that are key to a good espresso: miscela (blend), macinazione (grind), macchina (machine), and mano (hand).
See also: Coffee, Coffee (drink), Espresso machine, Ristretto, Lungo, Cappuccino, Espresso con panna, Latte, Cortado, Mocha, Caffé, Coffeehouse, Demitasse, Drip brew, Moka.
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