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How to Make Espresso Machine Coffee An espresso machine can make an excellent cup of coffee, however it requires some more set-up and upkeep than a typical drip coffee maker. It also requires you to grind and tap your own beans. The primary ingredient to make espresso is pressure. The way espresso machines work is that the heating vessel heats the water to a perfect temperature, then it forces it out of the spouts and into the grounds. Temperature Espresso is produced by pushing hot water under pressure through finely ground coffee beans. The temperature of the water is critical to the quality of the final shot. Low temperatures lead to inadequate extraction of the essential flavor compounds. Temperatures that are too high can result in over extraction, which can cause bitter or burned taste. The ideal temperature for espresso is between 195 and 205degF. This temperature is reached by using an espresso group head that has been made to maintain the same temperature and stability throughout the brewing process. The most sought-after type of group head is the E61, which provides an array of temperature stability and pre-infusion capability, as well as lever control. It is important to consider the temperature when you adjust your espresso machine for different roasts or brew ratios. This can affect the extraction yield and the crema. The ideal temperature will depend on the specific bean and roast but the general rule is that lighter roasts and greater ratios of brews require higher temperatures than darker roasts and lower ratios of brew. A good thermocouple is also crucial to keep the temperature at a constant level. Pressure During the process of brewing, espresso machine coffee is pushed through finely ground coffee grounds that have been tamped. This creates chemical reactions that extract flavors oils, flavors and other soluble components from the beans. The resulting beverage is typically richer and more flavorful than regular coffee. The ideal espresso machine's pressure should be nine bars which is the equivalent of the atmospheric pressure at sea level. The soluble components in the coffee bean are best extracted at this pressure. However, some espresso machines may advertise as high as 20 or 15 bars of pressure. While these machines are able to achieve these levels of pressure however, they might not be able to maintain the pressure during the extraction. One bar of pressure is equal to 32 pounds per square inch (PSI) of the tire of a car. It's more than four-times the pressure a professional cyclist applies to their bicycle tires. The ability to control the espresso machine pressure and create consistent espressos is key for any serious barista at home. Water The water you use to make espresso is one of the most important elements of a good cup of coffee. The right water will help your beans extract their full potential. Using the wrong water can lead to issues like clogged pipes, or even harm your expensive espresso machine. The best option is natural spring water that is high in minerals that will ensure the best espresso extraction. This water will enhance the taste of your espresso without the chalky mineral trace that is found in tap water or bottled water. This is a great alternative to distilled water or reverse osmosis, which can be too pure and cause issues with flavor. It is not recommended to use a water filtering system that removes the mineral content of the water you drink. This can lead to flavor and extraction problems. The best option is to buy an instrument for testing water, which will give you the local average hardness. This can then be used to find an filtration system that can provide the right water specs for your espresso machine. Beans Many coffee enthusiasts become enthralled in the whole process of making espresso. They get obsessed about a range of factors, including temperature, pressure of water and viscosity. If one variable is not working, even a little the whole shot could taste bad. The beans used are the most important factor when it comes to espresso. Many people believe that only certain kinds of beans are suited for espresso. Although certain beans are appropriate for certain purposes but any coffee bean can be used to make espresso. Espresso beans are roasted for longer than regular coffee beans, tipycally beyond the second crack. This gives them a darker look and makes them more water-soluble. The best beans for espresso are generally medium roasted or dark roasted, giving the shots that distinctive richness and vigor. Light roasted beans can also be used to make great espresso, particularly when they are ground prior to use to make it easier for an espresso maker. Milk Espresso and milk is a traditional combination. The combination of espresso and milk is an old-fashioned. It does not only improve energy levels however, it also balances the bitterness of the espresso. This is one of the best pairings for a meal! If you decide to get an espresso machine that is able to create cappuccino or latte, be sure to consider how easy it is to use. The best espresso machines include a jug to drink hot or cold coffee and a steam wand. They also come with an espresso portafilter that can be used to make the shot. Some models come with an inbuilt grinder, tamper, and frother. To get rid of any condensed water, the steam wand must be cleaned each day prior to use (or after each espresso cup). This process only takes 30 seconds, but it is vital to ensure that your machine stays running smoothly. If you don't cleanse this process, it could lead to bitter taste and/or buildup of bacteria that can alter the flavor or aroma of your beverage. It's easy to perform and should be a part of your regular maintenance routine.