Espresso coffee, espresso or just a – is a concentrated coffee beverage that is made in the process of passing hot water under pressure through a carefully crushed coffee beans. There are special coffee machines, and the person who controls the cooking process, referred to as Baristas Championship (Italian version of the bartender). Origin of the name the drink is still controversial. While some dictionaries just associate it with the word "compressed", "sucked", then, by analogy with the English word express, it also conveys a sense of the expressions "for you" and "drink fast food" that can be applied to a process for preparing an espresso. Words Express, expres and espresso in English, French and Italian languages have different meanings. In the first case, it can be attributed to "extract (expressing), or obtaining aromatic substances from coffee under steam pressure.

The second value means the rate at which this process occurs. In the third case of coffee as it is prepared exclusively (expressly) for someone who is going to try it. In countries such as France, Spain and Portugal, the term "Expresso". In Italy, more accustomed to say "espresso" as the letter "X" is not considered as part of the Italian alphabet, and is usually replaced by the letter "c". In espresso contains more caffeine than Standard servings of coffee beverage. For example, the amount of caffeine in 30 ml of espresso is equal to about half its contents in 180 ml of coffee brewed in the usual way (from 80 to 130 mg), therefore, two small cups of espresso can be replace the whole cup of regular coffee.

According to the terminology of preparation, espresso and regular coffee, made by boiling, should have the same extraction (meaning that only goes about making coffee 20% ground coffee), but the espresso is a more robust (as the concentration above the coffee powder by less water when cooking). Unlike other methods of making coffee, espresso is a more dense, with a high content of dissolved substances, forming foam ("cream"). Since coffee is produced under pressure, the concentration of chemicals in a cup is very high, resulting in taste quality enhanced. That is why espresso is prepared on the basis of many other drinks such as lattes, cappuccino, macchiato, mocha, and American. Suitable for espresso coffee beans roasting any, change just a taste – bitter or sour, respectively, for the darker and lighter roast. Nevertheless, there is a mixture of different coffee beans roasting method. In Italy, the birthplace of coffee, roasting methods differ, for example, south of it darker and becomes lighter as we move to the northern areas. Espresso coffee drink has become a tradition for many parts of the world, although this phenomenon has been observed recently. With the expansion of the network coffeehouses in the '90s, espresso-based drinks have become increasingly popular in the U.S., particularly in Seattle, thanks to which awakened modern interest in espresso. Along with the traditional espresso (Italian espresso coffee) many coffee establishments offer different variations on it – with syrup, whipped cream, different flavors, soy milk and spices. In recent years the popularity of espresso is constantly growing, especially in those regions that have long been known various methods of coffee preparation. In Northern Europe, appeared online coffee facilities, allowing to try this drink almost anywhere. With the popularity of growing interest in espresso coffee machine and that allow it to cook and at home. Also there was very convenient for the office coffee service in the office