What is espresso? Why is there a golden layer on the espresso?

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What is espresso?

Espresso is Italy's immediate demand for caffeine. The word conveys a direct message about the drink-be quick. It can be made quickly or sent to customers as quickly as caffeine gives you a shock.

So what's the difference? Well, hot and pressurized water grinds the coffee powder to extract the coffee liquid, which is higher in content and denser than hand-brewed coffee.

Does that sound too strong? Don't worry, espresso is not just a sip of espresso from a miniature coffee cup. It is also the basis for us to drink other coffee, such as American coffee, cappuccino, Frey white, latte.

If you want to know the difference between these coffees, it's simply the difference in the proportion of water, milk foam and coffee.

The structure of espresso

Espresso is not only more full-bodied than hand-brewed coffee, but also contains more coffee. It also has layers.

Oil and fat

This is a golden brown layer of material at the top made up of protein, oil and melanin. Not all coffee produces oil, and it's a controversial topic: some people think it's too bitter, while others think it's a sign of a good cup of coffee.

If grease doesn't mean that this cup of coffee is good and tastes bad, why are we talking about it? Because the customer cares about it. In fact, a study by Nestl é shows that people think that coffee without fat is milder.