How to make espresso? what should be paid attention to in the process of making espresso?

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Spresso, originally from Italian, generally refers to a way of brewing coffee that uses near-boiling high-temperature and high-pressure water to quickly grind coffee into fine powder, or directly calls the coffee made in this way Espresso, generally called "Italian coffee" or "espresso". In Italy, espresso does not say "please give me a cup of Espresso", but simply say "caff è", because for Italians, coffee should be brewed in the way of Espresso.

Espresso coffee is generally thicker than other methods and contains higher concentrations of suspended solids and dissolved solids, such as coffee fat on the surface (crema, a cream foam). Because of its pressurized production process, Espresso has a strong taste and a very high concentration of chemicals. It is often used as a base for other drinks, such as latte, cappuccino, macchiato, mocha and American coffee.

Espresso coffee contains more caffeine per unit volume than other coffee drinks, but the total caffeine content is lower because it is smaller per serving and the contact time between hot water and coffee powder is very short, usually only about 20 to 30 seconds. Although the actual caffeine content of coffee drinks is affected by volume, source of beans, baking methods and other factors, a "typical" Italian Espresso coffee contains about 80 milligrams of caffeine, while a dripping coffee contains 95 to 200mg caffeine.

Black coffee means black coffee.

SCA espresso ESPRESSO parameters:

Powder quantity: 7g powder above water temperature: 88 ℃-96 ℃ pressure: 9-10 bar extraction time: 20S--30S extraction quantity: 30 ML ±5 ML (including crema)

Our general extraction time is about 25s. After weighing and pressing the powder, we begin to extract it by machine. Details: before the handle is fastened, the front end water will be put away, then the handle will be installed and the extraction will begin.

Electronic scale: you can put an electronic scale under the coffee cup when you put the coffee cup. Heavy coffee can also help you maintain stability. Timer: calculating extraction time