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What to Look For in a Barista Espresso Machine

The espresso machine is one of the most complicated coffee machines around the globe. It is comprised of three major components. The bottom holds the water, and the middle is the filter-basket.

This machine was a huge success and helped to popularize home barista espresso. It features a 2.2L steam boiler, low pressure pre-infusion & 9 bar brewing pressure.

Pressure

If you're serious about coffee and espresso, then you're aware that the pressure of your espresso machine is a crucial factor in how well your drinks taste. The pressure of your machine is crucial to making excellent coffee, whether you want a thick layer or a perfect balance of acidity and flavor.

BARs (Barometric pressure) is the force your espresso machine exerts upon the grounds of your coffee while delivering high-pressure water. Your espresso machine is pushing hot water through the grounds of coffee at nine times Earth's current atmosphere pressure.

The pressure of your machine is essential because it allows the water to pass through the coffee grounds at the proper speed and intensity. If the pressure isn't high enough the oils and flavors aren't extracted properly. On the other however, if the pressure is too high, the water will be forced through the coffee grounds too fast and you'll end with an over-extracted, weak cup of espresso.

The pressure of your espresso machine can be controlled by adjusting the screw located on the espresso pump. Commercial and high-end home machines feature rotary pumps with adjustable pressure. For the cheaper home machines that utilize a vibration motor, it's not possible to alter the pressure with DIY hacks. However, companies such as Cafflano are working on technology that makes use of Pascal's Principle to create maintained pressure inside the portafilter throughout the beer making process.

Temperature

The temperature is among the most crucial factors to an excellent espresso shot. If the water is too hot, it will scorch the coffee grounds and create an over-extracted bitter drink. The optimal temperature for extraction is 200 degrees Fahrenheit. This allows the water to extract all desired coffee flavors without burning the grounds or causing excessive extraction.

The best espresso maker espresso machines will include a thermoblock that is used to heat the water and keep it at a steady temperature throughout the whole extraction process. The Breville Barista Express, for example, has PID (Proportional Integral Derivative) system that continuously monitors the water temperature and adjusts according to the need so that the brew head stays at the right temperature for extraction.

Many coffee drinkers know that the temperature of your espresso maker is a key factor in making a quality cup of coffee. The ideal temperature for brewing espresso is between 190 to 196 degrees Fahrenheit. To get this temperature, you need a machine with a good thermoblock, thermocoil, and a boiler that is correctly sized.

It is also crucial to pre-heat your machine, portafilter, and cup prior to making the Espresso maker for home. Beginner espresso makers often make the mistake of not preheating their machines. This is why you should always study the instruction manual before using your espresso maker for the first time.