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How a Coffee Espresso Machine Works Understanding how complex devices function can make them easier to understand and appreciate. It can also help you determine which one is right for you. Two important factors in espresso machines are pressure and temperature of the water. Water needs to be between 195 and 204 degrees Fahrenheit in order to achieve optimal flavor extraction. The pressure is vital however, If it's too much, the coffee will taste bitter. The ideal pressure is nine bars. Types If you are an avid coffee drinker and would like a stronger, fuller-bodied flavor than a standard drip machine espresso makers could be the best choice for you. Espresso is an intense coffee brew that is made by forcing pressurized hot water through finely ground beans in the portafilter. There are many different designs of espresso machines, but they all share certain features. The most common espresso machine employs a pump to drive pre-heated water through the brewing system, creating high pressure to extract espresso. The pump is powered by gas or electricity, and there are different kinds of pumps that can be utilized to produce different levels of pressure. Many espresso machines let customers choose between pre-packaged pods and freshly ground coffee beans. Fresh ground beans are more flavorful and allow the consumer to adjust their coffee strength. They also save money over time as compared to pre-packaged pods. These types of machines often have a built-in grinder that can begin the process with fresh, high-quality coffee grounds. Most also feature steam wands that can be used to make the hot, frothy milk typically used in drinks like cappuccino or the latte. Although manual espresso machines aren't as popular as the semi-automatic and automatic alternatives, they offer more control over the variables of brewing like the time to cut (end) the shot. Additionally, these kinds of machines can be adjusted to meet varying preferences by the user, for example, adjusting the size of the shot, or the strength of the coffee. These espresso machines have a reservoir to hold water, a portafilter that has an handle, and a spigot where ground coffee can be made. The spigot is mounted in the grouphead where the portafilter draws espresso shots. These machines are equipped with a control panel that allows you to alter the temperature of the water, the duration of the brewing process, and also the pressure. They are typically operated with an electric switch, but some have a hand-operated lever. Origins In the beginning, when there was no espresso coffee, brews were made by transferring steam-water mixtures through ground coffee under pressure. Baristas had to work hard and spend hours on this. As the popularity of coffee grew the demand for a quicker way to make the beverage. The concept for the espresso machine for coffee was born from this. In 1884, Angelo Moriondo patented his steam machine that was able to push water and steam through tamped pucks of ground coffee under high pressure. Achille Gaggia's hand-pumped espresso machines improved on the design of the original in 1947. This model exerted more pressure on the coffee, extracting more oils and colloids. It also helped produce crema, which is the golden-colored layer that is placed on the top of the espresso cup. Gaggia promoted his machines with rhymes and targeted ads in the fields of entertainment and sports. The machines were renamed Cimbali and espresso was the word associated with them. Luigi Bezzera, a Milanese manufacturer, was a barista who had the knowledge to create more efficient espresso machines than his competitors. He made numerous improvements to the original Moriondo invention, and introduced portafilters, multiple brewheads, and other innovations that are still associated with 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 purchased part of the patent issued by Bezzera and marketed his own version of the “Ideale” espresso machine. This model has little resemblance to modern espresso machines, but was the first to be sold for commercial use. Pavoni's espresso machine was the first to create a thick, creamy crema by applying pressure. This was a major advancement for coffee. He also reduced the temperature of the boiler and used a valve that allowed for pressure to increase and down on a regular basis. This increased the consistency of the coffee and also reduced the loss of heat. The pump was an important improvement for the espresso maker and is still an integral part of today's espresso machines. Variations There are different types of espresso machines for coffee that have different processes and produce a different drink. The choice of machine ultimately comes down to the type of coffee you prefer. The varying factors that distinguish espresso from other coffee drinks are the method in which the beans are ground, what kind of water is used, and the amount of pressure that is applied during brewing. One of the most common is an espresso machine that is driven by a pump, that makes use of an electric pump to send water through a filter basket with ground coffee, and a metal filter. This type of machine is likely to be the easiest to operate, and does not require any specific skills. It is also one of the cheapest coffee espresso machines. Another option is a manual espresso machine, which lets you take control of the most important factors in brewing, such as water temperature and pressure. Espresso is best enjoyed when the water is between 200 and 204 degrees Fahrenheit and the ideal pressure ranges from 15 to nine bars. The machines typically come with a group head in which you can lock the portafilter. You can choose between double-wall or single-wall filtering baskets. They come with a handle that can be turned to secure the basket to the machine. A French press coffee maker is an excellent alternative for those looking to bring an authentic, European style of brewing into the workplace. The machines are constructed out of either metal or glass and comprise the lower chamber, which holds the grounds, then an upper chamber with an internal filter that is placed on top. smeg espresso machine pour hot water over the ground beans, wait several minutes, then remove the upper chamber to enjoy a delicious strong, bold cup of espresso. Capsule machines are a sleeker alternative that can be an excellent addition to an office. They work by heating the coffee pod in the machine, and then it is pressed into a container with hot water to make smooth and full-bodied coffee. They are also easy to clean and could be an excellent addition to an office that accommodates clients or has lots of one-on-one meetings. Benefits Whether you own a cafe, or work in an office, having a coffee and espresso machine can save you time and money. By avoiding having to leave and deal with long lines at the cafe early in the morning, you can begin your day in a positive manner. This will give you the energy needed to remain focused throughout the day. Many coffee and espresso machines come with features that let you manage every aspect of brewing including extraction settings, temperature, brew size, and much more. These controls allow you to make drinks that have the exact aromas and tastes that you prefer. You can choose among models that use whole-ground or coffee pods. This lets you make a variety of drinks with the same machine. Many of the most well-known espresso and coffee machines are also built with top-quality materials that last for many years. They are able to withstand a lot of use and still provide great aroma and flavor. Many machines are designed to be simple to clean and maintain a healthy working environment for your staff as well as your customers. Furthermore, new espresso machine technologies can help reduce energy and waste. For instance a modern coffee and espresso machine can reduce water waste by only filling it up to the desired quantity when it's ready to be used. This means that there is no need to constantly refill the tank, which will cut down on water consumption and energy usage. Furthermore, some machines come with a system that detects when the water is empty and will automatically shut off when it's finished brewing. This means that you don't have to regularly check and replenish the reservoir of water, which can reduce the risk of spills. Many espresso and coffee machines also have advanced cleaning features that remove calcium deposits from the machine's pipes. This process, called descaling is carried out by wiping the coffee or espresso machine with a mixture of white vinegar and warm water. It is recommended to descale your machine at least once per month, however some manufacturers suggest doing it as often as every three months.