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How to Make Espresso Machine Coffee An espresso machine can make delicious cups of coffee, but it needs a little more setup and maintenance than a regular drip coffee maker. You'll also need to grind and tamp the beans yourself. Pressure is a key element in making espresso. Here's how an espresso machine operates: a heater is used to heat water to a suitable temperature before forcing it through the grounds and out the spouts. Temperature Espresso is created by forcing hot water, under pressure, through finely ground coffee beans. The temperature of water is vital to the final shot. Temperatures that are too low can result in a lack of flavor compounds. High temperatures can cause over extraction, which may cause bitter or burned taste. The ideal temperature for espresso is between 195 and 205degF. This temperature is achieved by using the group head, which is made to maintain the stability of temperature and maintain a constant temperature throughout the brewing process. The most sought-after type of group head is the E61, which provides the stability of temperature as well as pre-infusion capabilities and lever control. When adjusting the espresso machine for different roasts and brew ratios it is important to consider the effect of temperature on extraction yield as well as crema. The ideal temperature will differ according to the roast and bean. However generally speaking, it is believed that lighter roasts with higher brew rate require higher temperatures. A good thermocouple is essential for maintaining the temperature at a constant level. Pressure In the process of brewing, espresso machine coffee is pushed through finely ground and tamped grounds. This triggers chemical reactions that remove flavors, oils and other soluble ingredients. The resultant drink is usually richer and more flavorful than regular coffee. The ideal espresso machine's pressure is nine bars of pressure that's the same as the atmospheric pressure at sea level. The soluble components in the coffee bean are best extracted at this pressure. However certain espresso machines advertise as high as 20 or 15 bars of pressure. They may be able to attain these pressure levels but they may not maintain them throughout the extraction. One bar of pressure equals to 32 pounds per square inch (PSI) of a car's tire. It's also four times the amount of pressure that professional cyclists use when pumping up their bike tires. The ability to control the espresso machine's pressure, and to make consistent espressos is the key to any serious home barista. Water The water you use in your espresso maker is among the most important aspects of a good cup of coffee. The correct water can help your beans reach their full potential. However the wrong water can cause issues such as clogged pipes and damage to your expensive machine. For the best espresso extraction it is recommended to choose an organic spring with a high mineral content. This water will enhance the flavor of your coffee without the chalky mineral traces that are found from tap water or bottled water. This is an excellent alternative to distillation or reverse osmosis water that can be too pure and cause issues with flavor. But, you shouldn't use filters that remove excessive minerals from your tap water, as this can also cause problems with flavor and extraction. Get a water test kit to determine the average hardness of the water you drink in your area. This information can be used in determining the correct filtration system to your espresso machine. Beans The majority of coffee enthusiasts become enthralled in the whole process of making espresso. espresso coffee machines obsess about a number factors, including temperature, pressure in the water and viscosity. If one variable is even slightly off, the entire shot may be sour. The beans used are the most important thing when it comes to espresso. Many people believe that only certain types are suitable for espresso. While certain beans are suited for certain purposes but any bean that is roasted can be used to make espresso. Espresso beans are roasted longer than regular coffee beans, which is beyond the second crack. This gives them a darker appearance and makes them more water-soluble. The best espresso beans are usually medium-roasted or dark roasted, giving the espressos their distinctive richness and boldness. Light roasted beans can also be used to make great espresso, especially when they are ground prior to use to make it easier to use an espresso maker. Milk Espresso and milk are a traditional combination. The coffee doesn't just boost energy levels, but the steamed milk helps to offset the bitterness of the espresso and also adds a wonderful creamy flavor. This is one of the best culinary pairings! When choosing an espresso machine capable of making latte, or a cappuccino as well you need to think about how easy it will be to use. Many of the best espresso machines have the jug which can be filled with hot or cold milk as well as a steam wand, and a portafilter for pulling the shot. Some models also come with a built-in grinder along with a tamper, frother and tamper. To remove any condensed water the steam wand should be cleaned each day prior to use (or after each espresso cup). This process will take only 30 seconds, yet it is vital to ensure that your machine stays running smoothly. Failure to cleanse could cause a bitter taste or build-up of bacteria that may alter the flavor and aroma of your drinks. It's easy to perform and should be part of your regular maintenance routine.