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Where Are You Going To Find Machine Espresso 1 Year From What Is Happening Now?
How Does Machine Espresso Work?

The machine espresso utilizes precision pressure, and a filter technology that is mind-blowing to create the coffee you enjoy. How does it work exactly?

To make espresso, hot water is pushed under pressure through finely ground coffee. The process is similar to making drip coffee. However it is the pressure that makes the main difference.

The Head of the Group

The group head is the portafilter you put in when making espresso. It is responsible for dispersing the water into the portafilter and controlling the pressure that results from the extraction. There are numerous kinds of group heads each with their own advantages and disadvantages. Some focus on temperature stability, some on pre-infusion capabilities, and still others are designed to control the lever. Some have a combination, such as the E61. This is a very popular choice for baristas since it provides multiple advantages in one package.

As you can see in the above photo The group head features several notches to place your portafilter and then twist it manually to lock it in. There is also a gasket made of rubber that is a part of the notches and helps to create the seal when you insert your portafilter into the machine. The notches allow for an exact placement of the portafilter. This is crucial for a consistent extraction.

Aside from allowing you to easily connect your portafilter, the group head is responsible for maintaining a consistent temperature. This is achieved by cycling hot water around the portafilter, and through the brew basin, ensuring that the temperature is constant for extraction. This is important, as even a few degrees can make the difference between good and great espresso.

The Pump

Contrary to manual piston machines which rely on a lever that pressurize water, Rotary espresso machines rely on motorized pumps that provide the nine atmospheric bars of pressure needed for espresso extraction. This pressure builds up by drawing tap water from a reservoir and pumping it through a heat exchanger prior to being shot through the ground coffee in the group head.

Pumps are generally more affordable and last longer than piston-driven machines. However, both types of machines may degrade due to overuse and insufficient cleaning. Pumps are also more complicated mechanically, and can add to the price of even the most basic models.

Certain espresso machines utilize steam pressure instead of a pump for brewing espresso. The drawback is that the same boiler that produces steam also raises the temperature of the water to the point of boiling and can result in over-extraction. Additionally the machines often have to rebuild their pressure between cups, which takes time and energy.

A large majority of espresso machines employ either a vibration or rotary pump. A vibration model makes use of the vibrating disk to create pressure, whereas the rotating model pushes hot water through the ground at a rapid speed. Both machines can produce excellent espresso however rotary machines tend to be more quiet, durable and less likely to fail.

The Boiler

The boiler is the component that heats the water to the optimal temperature to extract. The steam produced is then directed to the portafilter, which contains the espresso coffee grounds. It is then pumped into the cup. During this process the steam is able to create enough pressure to push the grounds of the coffee through. This creates a layer crema that is then poured over. This is the hallmark of a great espresso.


There are three kinds of espresso makers, which differ in the type of pump they employ and the degree of heat that the brew is. There are various ways to control the strength of the brew and the size of the cup that can be produced by the machine.

The first espresso machines were steam-types. The earliest espresso machines were steam-type machines. espresso machines uk led to the coffee tasting burnt and bitter. This is the reason why Milanese manufacturers Luigi Bezzerra and Desiderio Pavoni created the modern espresso machine.

The most well-known espresso machine is a semiautomatic that has an electric pump. These are the images people have when they think of an espresso machine. With a semi-automatic machine, you have to grind the beans and tamp them by hand. The pump provides regulated water flow and pressure. This is an excellent compromise between human touch and mechanized quality.

The Filter

Typically, espresso machines use filters that separate the grounds of coffee as they move through the hot water. The filter is also a crucial component of the temperature control system since it helps prevent the machine from overheating.

It also enhances flavor as a filter lets you enjoy a longer bloom time. This helps the beans release their flavors and provides an opportunity to improve extraction.

However it is crucial to remember that even a good filter could result in a bad cup of coffee, since the quality of the beans and extraction are important.

It's here that the magic takes place. This is the reason why espresso tastes so delicious. The grouphead, sometimes referred to as the brewhead, is where the portafilter (the device you put the coffee ground into) is placed when you're making espresso.

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

In recent years, compressed-air-pump-driven espresso machines have been gaining popularity. They utilize an air compressor to push hot water into the grounds, and are far more portable than steam-driven electric machines.

Homepage: https://www.coffeee.uk/products/beko-cep5152b-espresso-machine-15-bar-1200-ml-black