Italian concentrated three-stage extraction Italian concentrated aesthetic art

Espresso is a single espresso brewed with 20~30ml at 6.5g and 10g, or a double espresso with 40~60ml at 14g / 16g. Because of the extraction physics and efficiency of the espresso machine, the taste of coffee brewed in a double powder cup is generally better than that in a single powder cup. Different types of espresso can be made based on this single or double espresso, but today we will first discuss espresso and Italian American coffee.

At present, black coffee is the way that people pay attention to health, and most people drink it. Although there are various ways of brewing, it will not deviate from the so-called golden cup rule. (the golden ratio of extraction rate and concentration investigated by Coffee International is called Golden Cup Criterion: extraction rate-> 18%-22%, concentration-> 1.15%-1.55%. In other words, take the coffee liquid made from 10g coffee powder as an example, it should fall between the 191ml~116ml and not feel too light or too strong.) Espresso brewed with an Italian coffee machine and mixed with hot water or ice cubes into black coffee that meets the gold cup criteria can be called Italian American coffee or Italian American iced coffee. Because the delicious volatile oil in coffee beans will emulsify under the high pressure of Italian coffee machine and dissolve into water and be extracted into the cup. Therefore, the details and levels of Italian American coffee will be much more than other brewing methods, but the inferior coffee flavor will also be magnified, so using Italian coffee mechanism as Italian American coffee (black coffee) will choose the quality of coffee beans. If this black coffee is bitter and difficult to taste, it can only be seasoned with milk and sugar, but this is by no means the basic way to taste coffee, unless it is for a change of taste, but if you have not tasted black coffee that meets the golden cup criteria, how can it be called "coffee has been tasted"?

Espresso is even more tricky, the average person's mouth can not bear a strong sense of taste, such as too bitter, too sour, too sweet, too salty (spicy is the mouth's sense of touch, not taste) can be unbearable, and various tastes can be properly reconciled, but pleasant. Among them, temperature will affect the sensitivity of oral taste, bitter taste is more sensitive than sour taste at high temperature, while sour taste is more sensitive than bitter taste at low temperature, but coffee without sour and bitter taste is like stagnant water, sweet and salty. After collecting the literature, I learned that most Italians drink espresso with some sugar, but some people still drink the original espresso, some people drink one cup, some people drink three cups, and if I can, I will sip it slowly. A cup of espresso with heart, the design of all kinds of taste, will be a dish to go to heaven or hell, depending on the skill and heart of the chef. If we can take into account the change of temperature, it is even more an art!

Use 15g coffee beans with Italian coffee machine, double powder cups and proper grinding to extract 60ml espresso, which is divided into front 25ml, middle 25ml and rear 10ml. After the espresso is diluted according to the golden cup criterion, the taste of the front, middle and back stages will generally be very fragrant, but depending on the roasting degree and formula of the coffee beans, it may be just right or slightly sour. In fact, it is the very strong espresso (Espresso Ristretto) diluted into the golden cup criterion. Imagine what it would be like if the cup you drank was reduced to four times the concentration of coffee. The taste concentration in the middle may be just right, but what seems to be missing? Yes, that is the essence of coffee, coffee precursor fragrance material! If you mix the front and middle, you can get a near-perfect full-bodied cup of coffee! The caffeine in the latter part of the cup is relatively high, if you need caffeine, you can add it to the coffee cup and finally adjust the dilution according to your preference.