How to use the espresso machine? what beans are good for the espresso machine? what is suitable for brewing espresso?

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Espresso is known as the soul of coffee. If you don't sell Espresso in an Italian coffee shop, it is not a coffee shop. You can know the importance of Espresso.

one

Name and origin

The Chinese translation of "espresso" in Espresso is somewhat disagreeable, and it is easy to give rise to many misunderstandings. In China, "espresso" is more likely to be understood as "cappuccino, latte, mocha, etc." it needs to be explained by the original (Italian) Espresso.

Espresso is Italian, literally equivalent to English Espress, meaning on the spur of the moment and for you. If you order a cup of espresso in Italy, the Italian is not called Espresso, but coffee. For Italians, only Espresso deserves to be called coffee, not the others. To them, Espresso is not only a kind of spirit, but also a kind of culture, a way of life, and not just a cup of pungent black drink.

Espresso was invented by MR.Gaggia in 1946, and Gaggia further improved the piston pressure system-using spring pressure instead of manual pressing to float a golden layer of coffee fat on brewed coffee-Crema Klima, which was the first appearance of Crema Clema in coffee history, and this year became the official birth year of Espresso. Until about 1986, Xing Dad pushed "it" to the world, and Xing Dad played an important role, which deserves to be praised for Xing Dad at this point.

two

Extraction mode

Espresso must be extracted through an Italian coffee machine, such as mocha, siphon pot and so on. The extraction uses deep-roasted coffee beans (such as French and Italian roasted beans). Lightly roasted beans can not extract rich coffee oil (Crema) and can not have a good taste. Lightly roasted beans are suitable for the production of individual coffee. For the degree of grinding is also strictly required to be ground into very fine coffee powder, the key point is to go through 9 atmospheric pressure and 92 degrees Celsius hot water, in about 15-25 seconds, the amount of extraction is about 30 milliliters.

three

Fascinating coffee fat (Crema)

Crema occupies the importance of Espresso taste, and a successful Espresso depends on whether there is a layer of Crema floating on its surface. The reason why Crema can be produced is that a large amount of carbon dioxide is produced inside the coffee bean during baking. When hot water hits the coffee powder under high pressure, it will emulsify the insoluble oil of the coffee powder and dissolve a large amount of carbon dioxide supersaturated at the same time. Carbon dioxide will be squeezed to the outside of the cell wall because of thermal expansion and cold contraction. The coffee extracted by hot water also contains some greasy substances, which squeeze out the carbon dioxide gas, thus producing thin bubbles.

four

What do I know from Crema?

Whether the coffee beans are fresh or not, the freshness of the coffee beans will affect the richness of Crema. Generally speaking, the Crema extracted from the old coffee beans is thin and sparse.

2 the extraction degree of coffee

3 whether the extraction of coffee is uniform or not

five

What are the factors that affect Espresso

1 the freshness of Italian coffee beans, whether the coffee beans are fresh or not is the top priority, which greatly affects the taste.

(2) the baking degree of Italian coffee beans is generally deep-roasted coffee beans.

(3) the grinding degree of Italian coffee powder needs very fine coffee powder, and the grinding scale should be adjusted according to the taste of coffee.

4 the strength of pressing powder, whether it is flat, vertical pressing powder, the surface is flat, the hot water is too tight to pass through the coffee powder, the pressure is too loose to extract shallow, thus affecting the taste of coffee, it is necessary to strengthen practice to find the right powder pressing strength.

5 the pressure of Italian machine, generally speaking, Italian machine is 9 atmospheric pressure.

6 water temperature and quality, water temperature between 90-95 degrees Celsius, winter or the north can not meet this requirement, the quality of water needs to install a filter

six

Steps to make a cup of Espresso

1 wipe the feeling handle and powder bowl before cooking

Pick up the coffee powder and grind it before brewing

3 gently shake the powder bowl, evenly distribute the powder, and sometimes flatten the surface with your fingers

Press the powder, use the powder hammer to press the coffee powder vertically, the surface is smooth

5 clean the ears on both sides of the powder bowl, otherwise it will affect the fastening

It is necessary to release a section of water so as to keep the water temperature consistent.

7 clean the machine and tighten the handle

8 put the preheated ounce cup below to pick up the coffee

9 hygienic cleaning, dumping coffee grounds, flushing machines and handles

END