Nine Things That Your Parent Taught You About Machine Espresso > 자유게시판

How Does Machine Espresso Work?

machine espresso (just click the up coming article) uses precision pressure and amazing filter technology to make the coffee we love. What exactly does it work?

To make an espresso, hot water is forced under high pressure through finely ground coffee. The process is similar to that of making drip coffee. However, the pressure is the primary difference.

The Head of the Group

The group head is the portafilter you put in when making espresso. It is responsible for dispersing water into the portafilter, and controlling the pressure of the extraction. There are many different types of group heads each with distinct advantages and drawbacks. Some are specifically designed for stability in temperature, while others are built to handle pre-infusion. Others are made to control the lever. Some have a combination, such as the E61. This is a preferred choice for baristas since it provides multiple benefits in a single package.

As you can see in the image above the group head comes with numerous notches that you can put your portafilter, then twist it manually to secure it. There is also a gasket of rubber which is located inside the notches to help create an airtight seal after inserting your portafilter into the machine. The notches on the head permit an exact location of the portafilter which is necessary for an even extraction.

Apart from allowing you easily place your portafilter in, the group head is also responsible best bean to cup espresso machine maintain an even temperature. It does this by cycling hot water through the brew basket, and around the portafilter, making sure that it is always at the right temperature to extract. It is important to realize that even a small deviation can make the difference between a good and a great espresso.

The Pump

In contrast to piston machines that are manually operated, that use a lever to pressurize water, the rotary espresso machines use motorized pumps to provide the nine atmospheric bars of pressure that are required for espresso extraction. The pressure is created by pumping water through a heat-exchanger and then through the ground coffee.

Pumps are typically less expensive and last for longer than piston-driven machines. However, both kinds of machines can deteriorate due to excessive use and insufficient cleaning. They also make mechanically complex and can lead to the cost of even the simplest models.

Certain professional espresso machine machines utilize steam pressure instead of a pump to brew espresso. This can result in over-extraction because the boiler that makes steam also warms the water to boil. They also have to continually rebuild their pressure between cups. This takes energy and time.

A majority of espresso machines use a vibration or rotary pump, with a vibrating model using a rotating disc to create pressure and a rotary model pushing hot water through the grounds at high speed. Both machines produce great espresso, but rotary machines are more stable, quieter and less likely to break down.

The Boiler

The boiler is what is used to heat the water to the perfect temperature to extract. The steam that is produced reaches the portafilter which holds ground espresso beans and is then funneled down into the cup. During this process, the steam creates pressure that pushes through the grounds of the coffee. This results in a whipped-up top of the espresso. This is one of the main characteristics of a great compact espresso machine.

There are three distinct types of espresso machines, each with a different type of pump and brew temperature. There are various ways in which the brew could be controlled as well as the dimensions of the cup the machine can make.

The first espresso machines were steam-based. The first espresso machines were steam-type machines. The coffee tasted bitter and burned. This is why the Milanese manufacturers Luigi Bezzerra and Desiderio Pavoni developed the modern espresso makers machine.

The most well-known espresso maker is a semi-automatic one that has an electric pump. These are what people imagine when they imagine an espresso machine. With a semi-automatic machine you have to grind the beans and then tamp them by hand. The pump regulates the flow of water and pressure. This is a great compromise between human control and mechanized reliability.

The Filter

Typically, espresso machines have filters that separate the grounds of coffee when they pass through the hot water. The filter is also an essential component of the machine's temp control, since it stops overheating.

It also aids in flavor, as a filter can allow for a longer bloom time. This allows the beans to release their flavors and provides the chance for better extraction.

It is important to keep in mind that even the finest filter can make a bad cup of coffee. The quality of the beans, and the extraction process remain crucial.

It's here that the magic happens. This is what makes espresso taste so good. The grouphead, sometimes referred to as the brewhead, is where the portafilter (the thingy you put the coffee ground into) is placed when you're making espresso.

In the steam-driven espresso machine hot water is heated in an airtight container to produce steam, which then pushes the hot water through the grounds with high pressure. They are less expensive and easier for the user to maintain than pumps-driven models. They are however limited to create the ideal conditions for brewing as they only operate with 1-1.5 bar of pressure. The ideal shot requires 9-10 bars.

In recent times, espresso machines powered by a compressed air pump have become increasingly popular. They make use of an air compressor Machine Espresso to push hot water through the ground and are much more mobile than electric steam-driven espresso machines.