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How a Coffee Espresso Machine Works Understanding how complex devices work will make them easier to understand and appreciate. You can also choose which device is best for you. Temperature and pressure of water are two important aspects in espresso machines. For optimal flavor extraction, water should be between 195 and 204 degrees Fahrenheit. The pressure is important, but if it's too high, the coffee will taste bitter. The ideal pressure is nine bars. Types If you are a coffee lover and prefer an intense, fuller-bodied taste than a standard drip machine espresso makers could be the best choice for you. Espresso is a concentrated coffee brew made by forcing pressurized hot water through finely ground beans inside the portafilter. There are a variety of designs for machines that have been developed to make espresso, but most share certain elements. The most commonly used type is pumps that drive heated brewing water that has been pre-heated through the system to generate high pressure. The pump can be powered either with gas or electricity. There are many types of pumps that generate different levels of pressure. Many espresso machines let users select between pre-packaged pods or freshly ground coffee beans. Fresh ground beans are more tasty and allow the user to adjust the strength of their coffee. They also save money over time as compared to pre-packaged pods. These types of machines often have a built-in grinder that can start the process off with fresh, quality coffee grounds. Many also come with a steam wand that can be used to create the hot, frothy milk that's often used in drinks such as cappuccino or the latte. Manual espresso machines may not be as popular as semi-automatic or automated alternatives, but they do offer more control over the variables that determine the time to cut off (end) the shot. Additionally, these types of machines can be adjusted to meet varying preferences by the user, for example, altering the size of the shot or strength of the coffee. The espresso machines are fitted with a reservoir which holds water as well as a portafilter handle and a spigot, where the ground coffee is made. The spigot is encased within the grouphead where the espresso shots are pulled out by the portafilter. These machines have a control panel that allows you to change the temperature of the water, brewing time and the amount pressure. They are usually operated by an electric switch, but some have a hand-operated lever. Origins In the beginning espresso coffee was prepared by pressing steam-water mixtures into ground coffee. Baristas had to work hard and spend a lot of time on this. As coffee became more popular, the demand for a faster way to make it grew. This is where the idea for a coffee espresso machine sprung from. In 1884, Angelo Moriondo patented his steam machine that was able to push steam and water through tamped pucks of ground coffee under high pressure. It wasn't until 1947 that Achille Gaggia improved upon the original design with his hand-pumped espresso machine. This model pumped more pressure on the coffee, resulting in more colloids and oils. It also contributed to the production of crema, which is the golden-colored layer that tops a cup of espresso. Gaggia promoted his machines with rhymes and targeted advertisements in sports and entertainment. The machines were branded Cimbali and the word espresso became synonymous with these copper constructions. Milanese manufacturer Luigi Bezzera was a barista and had the expertise to develop espresso machines that were more efficient than competitors' machines. He made numerous improvements to the original Moriondo invention, and introduced portafilters, multiple brewheads and other innovations that are associated with espresso makers today. He was also the first to file patents for single-shot espresso, thus creating the espresso coffee we love today. Desidero Pavoni was a café owner and entrepreneur who was influenced by the invention of Bezzera. He bought a portion of Bezzera's patent and marketed his version as the “Ideale” espresso machine. The model is not akin to modern espresso machines, but was the first to be sold for commercial use. Pavoni's machine set the standard for the one-ounce output of espresso and he was the first to utilize pressure to create a dense crema. This was a major leap forward for coffee. He also lowered temperature of the boiler and employed a valve that allowed pressure to rise and fall at regular intervals. This improved the consistency of the brew and reduced heat loss. The pump was a major improvement for the espresso maker, and is an integral part of modern espresso machines. Variations There are various types of espresso coffee machines that have different processes and create a slightly different drink. The decision to choose a machine comes down to the type of coffee you enjoy. Espresso is distinct from other coffee drinks based on how the beans are ground and the type of water used and the amount of pressure applied during the brewing process. Pump-driven espresso machines are the most commonly used. espresso machines for home Coffeee use an electric pump to send water into a basket with grounds of coffee and a screen. This type of machine can be the easiest to operate, and does not require any specific knowledge. It's also one of the most affordable coffee espresso machines. Another option is an espresso machine that is manual, which lets you manage key brewing factors like the temperature of the water and pressure. Espresso is most delicious when the water temperature is between the 195 and 204 degree Fahrenheit range, while ideal pressure ranges from 15 to 9 bars. The majority of these machines have an affixed group head, which you can lock the portafilter to. You can select from double-wall or single-wall filtering baskets. They have a handle that you can twist to secure the basket into the machine. A French press coffee maker is a great option for those who want to bring the rustic, European style of brewing into the office. The machines are constructed out of either metal or glass and comprise the lower chamber, which holds the grounds, then an upper chamber that houses an internal filter which sits on top. Pour hot water over the beans, sit for a couple of minutes, and then remove upper chamber and enjoy a rich cup of espresso. Capsule machines are a more sleek alternative that could be an excellent addition to an office. They operate by heating the pod of coffee in the machine, which is then placed in a container filled with hot water to create a smooth and full-bodied coffee. They are also easy to clean and can be a great addition to a workspace that caters to clients or has lots of one-on-one meetings. Benefits If you own a cafe or work in an office having a coffee and espresso machine can save you time and money. By avoiding the need to go out and wait in long cafe lines early in the morning, you can start your day off right. This will give you the energy to stay focused and on task throughout the day. Many espresso and coffee machines come with features that allow you to control all aspects of the brewing process. This includes temperature, extraction settings and the size of the brew. These controls allow you to make drinks that have the exact aromas and flavors that you want. You can also choose between a model that uses coffee pods or whole ground coffee which allows you to make various drinks with the same machine. Some of the most popular espresso and coffee machines are made with materials that are durable. They can withstand the rigors of heavy use while still providing outstanding aromas and flavor. Many machines are designed to be easy-to-clean which allows you to maintain a healthy working environment for your staff as well as your customers. Modern espresso machines also aid in reducing the use of energy and waste. For instance modern espresso machine and coffee maker can cut down on water waste by filling it up to the desired quantity when it's ready to use. This means there is no necessity of refilling the tank. This can decrease the use of water and energy. Additionally, some machines have sensors that determine when the water is empty and will automatically shut off after it's done brewing. This means that you don't have to check and refill the reservoir with water, which can reduce the chance of spills. Many espresso and coffee machines have advanced cleaning functions that remove calcium deposits from the machine's pipes. This process, called descaling is completed by wiping the coffee or espresso machine using a mixture of white vinegar and warm water. It is recommended to descale your machine at least once a month, but some makers recommend that you do it every three months.