Espresso Coffee

The term "Espresso" is derived from the Italian word for express since espresso is made for and served immediately to customer.
A double espresso is a 47~62.5 mL extract that is prepared from 14~17grams of coffee through which purified water of 88~95*C has been forced at 9~10 atmospheres of pressure for a brew time of 22~28 seconds.
The espresso should drip out of the porta~filter like warm honey,have a deep reddish-brown color,and a crema that makes up 10~30% of the beverage.

The best espresso
should be extraordinary sweet,have a potent aroma,and flavor similar to freshly ground coffre. The crema should be dark reddish~brown and smooth,yet thick.
A perfect espresso should be enjoyable straight with no addictives,yet bold enough to not disappear in milk. A pleasant and aromatic aftertaste should linger on the palate for serveral minutes after consumption.