This is because espresso is ordered by and delivered quickly to the customer.
A good espresso must taste sweet with a strong aroma whose flavor is like freshly ground coffee.
The wonders of science have made it possible for people to make their own espresso using espresso machines at home - instead of having to visit commercial coffee houses for it.
Before, coffee houses employed professional baristas to brew each and every cup of coffee for their customers.
Now, people can just buy an espresso machine to enjoy their own coffee at their convenience.
How does one select the best espresso machine for their purposes? Ideally, consumers should test-run each espresso machine and judge every one based on taste, build-quality, features, and ease of use.
However, since this is not practical, consumers can rely on testimonials from their friends or turn to the reviews published by reputable coffee aficionado magazines.
They can also go around the stores and window-shop, asking pertinent questions from the salespeople in order to make the best buy.
How does an espresso machine work? An espresso machine shoots out water that is 90 degrees Centigrade hot (or at a temperature equal to 195 degrees Fahrenheit) using 9 bar of pressure into a puck of freshly ground coffee.
The oils in the finely ground coffee are thus extracted and emulsified to create a rich, nearly syrupy liquid.
Ideally, a machine can churn out a double shot of espresso within 20 to 25 seconds from when its pump is initially switched on.
The amount of time necessary can be adjusted by putting in coffee that is either of a finer or coarser blend.
Or you can change the tamping pressure.
Certain espresso machines are combination machines that rely on a steam wand to create milk-based espresso beverages like the latte and cappucino.
The machine steams and froths milk to produce these drinks.
The different kinds of espresso machines are called the pump-driven espresso machine, piston-driven espresso machine, steam espresso machine, stovetop espresso machine, automatic espresso maker and lastly the super automatic espresso maker.
The key to good espresso is using an excellent espresso blend.
Coffees must be specially blended to produce the smoothness, aromatics and sweetness inherent in good espresso.
However, the blend should be freshly ground and brewed within four days from roasting.
Another element of good espresso making is that the espresso must be roasted light so that its sugars and aroma will not be lost.
Darkly-roasted espresso produces a bitter liquid that tastes like charcoal.
You must filter water used for brewing since if the water tastes weird it can affect the final outcome of brewing.
Make sure that the espresso machine you choose can maintain water temperature between 92 to 96 degrees Centigrade to assure a consistent espresso.
Many machines are made to be as easy to clean up as a standard coffee machine.
So there's no reason to feel intimidated about buying your own espresso machine.
Clearly, the benefits do outweigh the difficulties.