• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

How to Make Espresso Machine Coffee

Espresso machines can create an amazing cup of coffee, however they require more maintenance and setup than a regular coffee maker. It also requires you to grind and tamp your own beans.

The secret to making espresso is pressure. What happens in an espresso machine is that a heating vessel heats the water to the perfect temperature before forcing it out of the spouts and through the grounds.

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. Low temperatures result in under extraction of the essential flavor compounds. High temperatures can cause over extraction and can cause a bitter or burnt taste.

The ideal temperature for espresso is between 195 and 205degF. This temperature can be achieved using a grouphead designed to maintain an even temperature and stability throughout the brewing process. The most popular type of group head is the E61, which provides an array of temperature stability with pre-infusion and lever control.

It is crucial to take into account the temperature when you adjust your espresso machine to different roasts or brew ratios. This will impact the extraction yield as well as the crema. The optimal temperature will be contingent on the specific bean and roast however the general rule is that lighter roasts and higher ratios of brew require higher temperatures than darker roasts and lower brew ratios. In addition, a good thermocouple of good quality is essential to ensure a constant temperature.

Pressure

In the process of brewing, espresso machine coffee is pressure-pushed through finely ground and tamped grounds. This triggers chemical reactions that extract flavors oils, flavors, and other soluble components from the beans. 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. This is due to the fact that it's at this pressure the soluble compounds in espresso beans are most easily extracted.

However some espresso machines advertise as high as 20 or 15 bars of pressure. These machines could attain these pressure levels but they may not sustain them throughout the extraction.

To put that in perspective, one bar of pressure is equivalent to 32 pounds per square inch PSI of the tire of a car. It's four times the pressure a professional cyclist applies to their bike tires. The ability to control espresso machine's pressure and make consistent espressos is key for any serious home barista.

Water

The water you use in your espresso machine is among the most crucial aspects of a good cup of coffee. The correct water will help your beans extract their full potential, and the wrong type of water can cause problems like clogged pipes or even damage to your expensive espresso machine.

For the best extraction of espresso make sure you choose the natural spring that has a high mineral content. This water will enhance the flavor of your espresso without chalky mineral trace that is found in tap water or bottled water. This is an excellent alternative to reverse osmosis. It can be too pure and cause taste issues.

However, you should never use an water filter that removes excessive minerals from your tap water because this could cause extraction and flavor issues. 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 best filtration system for your espresso machine.

Beans

Many coffee enthusiasts become very involved in the whole process of making espresso. They obsess about a number factors, such as temperature, water pressure, and viscosity. If one factor is slighty off, the entire shot might taste bad.

The beans used are the most important thing when it comes down to espresso. Many people believe that only certain types of beans are suited for espresso. While some beans are better designed for specific uses but any bean that is roasted can be used to make espresso. Espresso beans are roasted longer than regular coffee beans, and tipycally beyond the second crack. This makes them appear darker and makes them more water-soluble.

The best espresso beans are generally medium roasted or dark roasted, which give the shots that distinctive richness and vigor. Lightly roasted beans can be used to create great espresso, especially when they are ground for ease of use in an espresso maker.

Milk

Espresso and milk are a classic pairing. The coffee doesn't just boost energy levels, but the steamed milk helps to balance the bitterness of pro espresso machine and provides a delicious creaminess. There aren't many culinary pairings more perfect than this!

If you choose to buy an espresso machine that also has the ability to make latte or cappuccino, be sure to consider how easy it is to use. The best espresso machines come with a jug of hot or cold milk and a steam wand. They also come with an in-built portafilter to take the shot. Some models also come with a built-in grinder, tamper and frother.

To get rid of any condensed water the steam wand should be purged each day before use (or after each cup of espresso). The process takes around 30 seconds and is important to keep your machine operating smoothly. Failure to purge can result in bitter taste or a build-up of bacteria that can affect the flavor and aroma of your drinks. It's easy to do and should be part of your regular maintenance routine.