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How a Coffee Espresso Machine Works Understanding how complex devices function will make them easier to understand and appreciate. You can also choose which device is right for you. Two important factors in espresso machines are pressure and temperature. To extract the best flavor the water should be between 195-204 degrees Fahrenheit. The pressure is vital, but when it's too high the coffee will taste bitter. The ideal pressure is nine bar. Types If you're a lover of coffee who prefers a richer more full-bodied, full-bodied taste than the one produced by the typical drip coffee maker, then an espresso machine might be right for you. Espresso is a concentrated coffee brew made by pushing hot pressurized water through finely ground beans in the portafilter. A variety of machine designs have been created to produce espresso, but most share certain components. The most common espresso machine employs pumps to move pre-heated water through the brewing process, creating high pressure for extraction of espresso. The pump is powered either by gas or electricity. There are also different kinds of pumps that generate different levels of pressure. Many espresso machines let users select whether they want to use pre-packaged coffee pods or freshly ground coffee beans. Fresh ground coffee is more flavorful, allows the user to modify the strength of the coffee and also save money over time, as opposed to purchasing pre-packaged pods. These machines are typically equipped with a built-in coffee grinder, which allows them to begin the process with fresh high-quality grounds of coffee. They typically come with a steam wand that can create the hot thick, frothy coffee milk typically used in drinks such as cappuccino and latte. While manual espresso machines aren't as popular as the semi-automatic and automatic options, they do provide more control over brewing variables like when to cut (end) the shot. These machines can also be adjusted to suit the preferences of the user like changing the strength of the coffee or the size of the espresso shot. These espresso machines are equipped with a reservoir which holds water as well as a portafilter handle and a spigot, where the ground coffee is being brewed. The spigot is fixed in the grouphead from where the portafilter is used to pull espresso shots. The majority of these machines feature a control panel where the temperature of the water, brewing time, and the amount of pressure can be altered. They are typically operated with an electric switch, however some are operated by a lever that can be operated by hand. Origins In the early days of espresso coffee, brews were prepared by circulating steam-water mixtures over ground coffee under pressure. Baristas had to be very hard at work and spend much time working on this. As coffee became more and more popular and more popular, the demand for a quicker way to make it grew. The concept for the coffee espresso machine was born from this. Angelo Moriondo patented his steam machine in 1884. It pushed steam and water under high pressure through tamped pucks ground coffee. It wasn't until 1947 when Achille Gaggia improved upon the original design with his hand-pumped espresso machine. This model added more pressure to the coffee, allowing it to extract more colloids and oils. It also assisted in the production of crema, that golden-colored layer that is placed on top of an espresso cup. Gaggia marketed his machines using rhymes and targeted advertising in the fields of entertainment and sports. The machines became known as Cimbali and the word espresso became synonymous with these copper structures. Milanese manufacturer Luigi Bezzera was a barista and he had the know-how to develop espresso machines that were more efficient than counterparts' devices. He made several improvements to the original Moriondo invention, and introduced portafilters, multiple brewheads, and other innovations that are associated with espresso makers today. He was the first to patent single-shot espresso and this is what led to the espresso coffee that we enjoy today. The invention of Bezzera inspired Desidero Pavoni, an owner of a café and an entrepreneur. He purchased part of the patent issued by Bezzera and marketed his own version of the “Ideale” espresso machine. The model isn't identical to modern espresso machines, however, it was the first commercially available model. Pavoni's machine standardized the one-ounce output of espresso, and he was the first person to use pressure to create a dense crema. This was a big step forward for the coffee. He also reduced the temperature of the boiler, and also used the valve to allow pressure to rise and down on a regular basis. This improved the consistency of the coffee and also reduced heat loss. The pump was a major improvement to the espresso coffee maker and is still an integral component of modern espresso machines. Variations There are many different types of espresso machines, each having different processes and a different drink. In machines espresso machines , the choice of machine is based on the kind of coffee you prefer. Espresso is distinct from other coffee drinks by the method in which the beans have been roasted as well as the kind of water used and the amount of pressure applied during the brewing process. Pump-driven espresso machines are the most common. They use an electric pump that pumps water into a basket containing grounds of coffee and a screen. This kind of machine is usually the easiest to operate and doesn't require any technical skills to operate. It's also the most affordable of all coffee espresso machines. Another popular option is a manual espresso machine, which allows you to manage important brewing variables like the temperature of the water and pressure. Espresso is most delicious when the water is between the 195 and 204 degree Fahrenheit range, while ideal pressure ranges from 15 to 9 bars. These machines usually have a group head that you lock the portafilter into. You can select between double-wall or single-wall filter baskets, both of which feature a handle on the side that you twist to secure them to the machine. A French press coffee machine is a good option for those who want to bring the rustic, European style of brewing into the office. These machines are made from metal or glass, and have a lower chamber to hold the grounds. An upper chamber with a filter is placed on the top. Pour hot coffee over the beans, sit for a few minutes before removing the upper chamber and enjoy a delicious cup of espresso. Capsule machines are a sleeker alternative that can be an excellent addition to an office. They work by heating the pod of coffee in the machine, which is then put into a container using hot water to make smooth and full-bodied coffee. They are also simple to clean, and can be a great addition to a workplace where there are many one-on-one or group meetings. Benefits Whether you run a cafe or work in an office setting having a coffee and espresso machine can save you time and money. By avoiding having to go out and stand in long cafe lines early in the morning, you will be able to begin your day in a positive manner. This will give you the energy to stay focused throughout the day. Many espresso and coffee machines come with features that allow you to control every aspect of brewing. This includes extraction settings, temperature and the size of the brew. These controls let you make drinks with the exact flavors and aromas that you desire. You can pick between models that use whole-ground or coffee pods. This allows you to create various drinks using the same machine. Many of the most well-known espresso and coffee machines are also constructed with high-quality materials that last an extended period of time. This means that they can withstand the rigors of use while providing exceptional flavor and aromas. A lot of machines are designed to be simple to clean, which can aid in maintaining the health of your staff and customers. Modern espresso machines can also help reduce the use of energy and waste. For example modern espresso and coffee machine can reduce water waste by only filling to the desired amount when it's ready to be used. This eliminates the need for constant refilling of the tank. This can decrease the amount of water used and also energy consumption. Additionally, some machines have sensors that determine when the water is empty and shuts it off after it's done brewing. This eliminates the need for baristas to continuously check and refill the reservoir, which could help reduce the risk of water spills. Many coffee and espresso makers also have advanced cleaning functions which can eliminate calcium deposits in the pipes of the machine. This process, called descaling is carried out by cleaning the coffee and espresso machine with a mixture of warm water and white vinegar. Descale your machine as frequently as three times per year.