The espresso machine is without a doubt the best of the coffee machines. This coffee maker creates a far superior coffee so unique that to date no other type of coffee maker has been able to reproduce or match.

The first known patent for an espresso machine was filed in Italy by the Milanese Luis Bezzera in 1901. This model was based on the output of pressurized water steam, and it was not until 1945 that the first espresso machines with a manual lever or piston.

The first manufacturer of piston espresso machines was Achille Gaggia who in 1945 began to market them with his company Gaggia.

This was actually the beginning of espresso coffee since previous coffee machines made coffee more similar to that made by Italian coffee machines (also known as mocha coffee machines).

Later in 1961 the Faema company began to market the first espresso machine that worked with a 9 bar pump under the name E61, which dominated the market for years.

Nowadays, espresso machines have gone from being only present in bars and coffee shops to also beginning to be present in many homes due to the decrease in price they have experienced.

Types of express coffee machines

There are or have been different models of espresso machines whose most significant difference is the type of impulse or mechanism that pushes the water vapor. According to this classification we find the following:

Steam

These buy coffee gear onlne work with the exit of water vapor under its own pressure. They were the first type of espresso machines.

Lever or Piston

These coffee makers have a lever that must be pushed down to make the steam escape. The stronger you push, the more pressure you get.

Of this same model, there are also some that have a spring that once released, they release the coffee shot only at a certain pressure (8 to 10 bars).

Bomb

Most of the espresso machines that we can find today in bars and cafes are of this type. In these coffee makers the water vapor is driven by means of a motor.

Compressed air

There are some models that use compressed air bottles to push the water vapor, although these coffee machines are quite new and are not widely used. They are generally smaller and include laptops because by eliminating the motor these are much simpler.

Functioning

Its operation consists of a water tank that is heated to 92º where it reaches a pressure of up to 10 bars, and then a valve opens that makes the water vapor pass for 15-30 seconds through the filter containing the highly compacted ground coffee. , and then generally fall directly into a cup.

Elaboration

The coffee maker is turned on if it was not already, and the (handle) where the receptacle where the coffee is to be inserted is removed.
It is filled with ground coffee and strongly compacted.
The (handle) is reassembled and the coffee cup or cups are placed under it in the appropriate position.
You press a button that heats the water, and the rest of the process is automatic.
Advantages and disadvantages

Advantages: They create a magical and unsurpassed coffee .
Disadvantages: Espresso machines are much more expensive than other coffee machines and also much more complex so they can present more problems over time.
Others
To know if an espresso has been made correctly, the cream must be able to hold a tablespoon of sugar for 10 seconds.
Outcome:
A dark coffee with a powerful and concentrated flavor , and with a lot of cream.

Author's Bio: 

coffe lover