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How a Coffee Espresso Machine Works Understanding how complex devices work can make them easier to understand and appreciate. It can also help you decide which one is the best fit for you. Two key espresso machine factors are water temperature and pressure. The water temperature should be between 195 and 204 degrees Fahrenheit in order to achieve optimal flavor extraction. The pressure is important, but when it's too high the coffee will taste bitter. The ideal pressure for coffee is nine bars. coffee machines espresso If you are an avid coffee drinker and would like more of a fuller, richer flavor to that of a standard drip machine, an espresso maker may be right for you. Espresso is a concentrated coffee brew created by forcing pressurized hot water through finely ground beans in the portafilter. There are many different designs of espresso machines, but they all have certain characteristics. The most popular type utilizes an engine that pumps heated brewing water pre-heated through the system to create high pressure. The pump can be powered either by gas or electricity. There are also different kinds of pumps that produce different pressure levels. Many espresso machines allow users to decide whether to use pre-packaged coffee pods or freshly ground coffee beans. Fresh grounds are more flavorful and allow the user to adjust their coffee strength. They also save money over time compared to pre-packaged pods. These kinds of machines typically have a built-in grinder that can start the process off with fresh, quality coffee grounds. The majority of them have a steam wand to make the hot foamy coffee milk that is commonly used in drinks like cappuccino and Latte. Manual espresso machines might not be as popular as semi-automatic and automatic alternatives, but they provide more control over the variables that determine the time to cut off (end) the shot. They can also be adjusted to fit the user's preferences for example, changing the strength of the coffee or the size of the espresso shot. The espresso machines come with a reservoir that holds water as well as a portafilter handle and a spigot, where ground coffee is brewed. The spigot is encased in the grouphead, where espresso shots are pulled out by the portafilter. Most of these machines also feature a control panel where the temperature of the water, time of brewing, and quantity of pressure can be altered. They are typically controlled by an electrical switch, however there are some with an adjustable lever that can be operated manually. Origins In the beginning, when there was no espresso coffee, brews were prepared by passing steam-water mixtures through ground coffee under pressure. This was time-consuming and required a lot of effort on the part of baristas. As coffee became more popular, the demand for a faster method of making it increased. This is where the idea for a coffee espresso machine came from. Angelo Moriondo patented his steam machinery in 1884. It was able to push water and steam under high pressure through tamped pucks that ground coffee. It wasn't until 1947 when Achille Gaggia improved the original design with his hand-pumped espresso machine. This model added more pressure to the coffee and allowed it to extract more colloids and oils. It also contributed to the production of crema, which is the golden-colored layer that is the top of an espresso cup. Gaggia promoted his machines through rhymes and targeted ads in entertainment and sports. The machines were later referred to as Cimbali and the word espresso was affixed with these copper constructions. Milanese manufacturer Luigi Bezzera was a barista and he had the know-how to develop espresso machines that were more efficient than his competitors' machines. He made numerous improvements to the original Moriondo invention, and introduced portafilters, multiple brewheads, and other innovations that are used by espresso makers today. He was the first to patent single-shot espresso and thus created the espresso coffee we enjoy today. Desidero Pavoni was a café owner and entrepreneur who was influenced by the invention of Bezzera. He bought a piece of the patent and launched the “Ideale”, his version. The model is not akin to modern espresso machines but was the first model to be made available for commercial use. Pavoni's machine set the standard for the one-ounce output of espresso, and he was the first to use pressure to create a thick crema. This was a major improvement for the coffee. He also reduced the temperature of the boiler, and also used the valve to allow pressure to spike up and down in regular intervals. This improved consistency of the coffee and decreased heat losses. The pump was a significant improvement to the espresso machine, and is present in modern espresso machines. Variations There are different types of coffee espresso machines that use different processes and create a slightly different drink. In the end, the choice of machine comes down to what type of coffee you like. Espresso is distinguished from other coffee drinks due to the way the beans have been ground as well as the kind of water used and the amount of pressure used during brewing. One of the most common is the pump-driven espresso machine which uses an electric pump to send water through a filter basket that contains ground coffee and a metal filter. This kind of machine can be the easiest to use and doesn't require any special expertise. It's also the least expensive of all coffee espresso machines. Another option is a manual espresso machine which allows you to control important brewing variables like water temperature and pressure. Espresso is most delicious when the water is between 200 and 204 degrees Fahrenheit and the optimal pressure can range from 15 to 9 bar. The majority of these machines have a group head that you secure the portafilter. You can pick between double-wall or single-wall filter baskets, which feature a handle on the side you turn to secure them to the machine. A French press coffee maker is an excellent option for those who want to bring the rustic, European style of brewing into the workplace. These machines are made out of either metal or glass and comprise the lower chamber, which holds the grounds, then an upper chamber that houses an internal filter that is placed on top. Pour hot water over the beans, let it sit for a few moments before removing the upper chamber and take a cup of rich espresso. Capsules are a sleeker alternative that could make an excellent addition to an office. They work by heating the pod of coffee inside the machine, which is then pressed into a container with hot water to produce an incredibly smooth and full-bodied cup of coffee. They're also easy to clean and can be ideal for an office that accommodates clients or holds lots of one-on-one meetings. Benefits Whether you run a cafe or work in an office, having a coffee and espresso machine can save you time and money. You can start your day in the right way by avoiding the need to stand in long lines at cafes. This will give you the energy to stay focused throughout the day. Many coffee and espresso machines have features that let you manage every aspect of brewing including extraction settings, temperature as well as brew size and more. These controls allow you to make drinks with the exact flavors and aromas that you prefer. You can also pick models that use coffee pods or whole ground coffee which allows you to create an array of different drinks with the same machine. Some of the most popular espresso and coffee machines are made using materials that are tough. This means they can stand up to high use, while providing outstanding flavor and aromas. Many machines are designed to be easy-to-clean and keep your workplace clean for your staff as well as your customers. Additionally, the latest espresso machine technologies can help reduce waste and energy costs. Modern coffee and espresso machines can reduce water waste, for example by filling the machine to the desired level when it is ready to use. This means there is no need to refill the tank. This can reduce the use of water and energy. Some machines also come with a system that detects when the water is empty and shuts off the machine automatically after brewing. This eliminates the need to constantly check and refill the reservoir of water and reduces the risk of spills. Many coffee and espresso makers also come with advanced cleaning features that remove calcium deposits that build up in the machine's pipes. This process is typically referred to as descaling, and is accomplished by wiping all the parts of the espresso and coffee maker with a combination of warm water and vinegar. It is recommended that you descale your machine at least once per month, but some manufacturers recommend that you do it every three months.