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What to Look For in a Barista Espresso Machine The espresso machine is among the most complex coffee machines in the world. It is made up of three main parts. The base holds the water and the middle part is a filter-basket with a metal filter. This machine was a huge success and helped to popularize the prosumer (home barista) espresso market. Features include a low pressure pre-infusion and an 2.2L boiler and the brewing pressure of 9 bars. Pressure If you're an avid coffee drinker, then you'll know that the pressure of your espresso machine is an important element in the quality of your coffee. Whether you're looking for a thick layer of crema or the perfect balance of flavor and acidity, the pressure of your espresso maker is the most important factor in brewing excellent espresso. BARs (Barometric Pressure) refer to the force that is imposed on the coffee grounds when your espresso machine is delivering its high-pressure water. The espresso machine is pushing hot water through the grounds of coffee at nine times that of Earth's current atmosphere pressure. The pressure of your machine is crucial because it allows the water to move through coffee grounds at a proper speed and intensity. If the pressure isn't sufficient the oils and flavors will not be extracted correctly. On the other contrary, if pressure is too high, the water will be pushed through the coffee grounds too quickly and you'll end with an over-extracted, weak cup of espresso. You can regulate the pressure of your espresso maker by adjusting the screw on the espresso maker. Commercial machines and some high-end home machines use rotating pumps that can be adjusted. For espressomachines that utilize an oscillating pump, changing the pressure is not possible without getting into DIY hacks. However, companies such as Cafflano are developing technology that uses Pascal's Principle to create maintained pressure in the portafilter during the making process. Temperature The temperature is one of the most important factors in brewing a great espresso shot. A hot water can burn the grounds of coffee, which can result in a bitter espresso. The optimal temperature for extraction is 200 degrees Fahrenheit. This lets the water extract all the desired coffee flavors without burning the grounds or excessively extracting. The top espresso machines have a thermoblock or thermocoil which warms the water and keeps it at a constant temperature throughout the entire extraction process. The Breville Barista Express has a PID system (Proportional Integral Derived) that constantly monitors and adjusts the temperature of water. This ensures that the brewhead stays at the right temperature for extraction. Many coffee drinkers know that the temperature of your espresso machine is an essential element in the production of a good cup of coffee. The ideal temperature for espresso is between between 190 and 196. To achieve this, you require an espresso machine that has a high-quality thermoblock, thermocoil or thermoblock and a boiler that is properly sized. In addition, it is important to pre-heat your portafilter, espresso machine, and the cup prior to making an espresso. Beginner espresso makers often make the mistake of not heating their machine prior to making a shot. This is the reason you should always review the instruction manual before using your espresso maker for the first time. Grind A barista machine should offer you a variety of grind settings, so that you can have the most control over your final cup of espresso. Some machines include an analog pressure gauge, which is cool and can help you gain knowledge about your brewing skills. The goal is to maintain a pressure of nine bars throughout the entire brewing process. This machine is close to reaching that goal. Another nice touch on this machine is the built-in burr grinder. This is a wonderful feature for newbies to espresso as it will not require you to pay for a separate burr grinder. The grinder is a conical stainless steel device with 18 settings, ranging from “coarse” to “fine.” This grinder isn't as powerful as a standalone unit, but it's an excellent start and will put you on the path to making quality espresso shots. It's easy to clean, and you can stop the grinder in the grinding process to avoid creating a mountainous amount of grounds in your portafilter when it is being stamped. This gorgeous and useful machine lets you enjoy the barista experience in your own home. It's a great choice for anyone who would like to be able to look back on the fond memories of pouring microfoam into their morning cup of joe, locking a portafilter into the grouphead, and then tamping with precision. For those who simply want convenience, a bean-to- cup machine could be a better fit. Water Water is a difficult thing to master. The trick is to find the appropriate balance. Too much can cause mineral deposits to form in the machine, but too small and you'll struggle to make a full cup of espresso. The ideal espresso water is low in hardness and high in alkalinity. This is best accomplished by using an effective water filtering system that eliminates chlorine and brings back in a small amount of total dissolving solids (TDS) to add calcium and magnesium to the mix. This will create an optimal balance between alkalinity and hardness and reduce the need to decalcify your machine. Using a high-quality filter water is essential for your machine's long-term health and the flavor of the coffee it produces. Depending on the use and the hardness of the machine, you should make use of a descaling product on a regular schedule. The products are available in liquid, powder and tab forms and are available at many hardware stores. The Breville Barista Express, a luxury high-end home espresso machine is designed to bring the café experience into your home. It is more sophisticated over other basic machines that are geared towards coffee lovers who want to perfect their technique and improve their craft. The thermocoil heating system that comes with integrated PID controller, centered on the group head makes it simple to regulate your brewing temperature. This is an enormous advantage over the other models that require you to spend more time “temperature surfing” in order to pull a consistent shot of espresso.