Make a perfect espresso

1: Choice of coffee machine

1. Boiler capacity: boiler capacity is large, the outlet water temperature is more stable, coffee quality is more stable.

2. Coffee machine temperature: whether to maintain stability, but also affect the quality of coffee.

3. Atmospheric pressure: nine atmospheric pressure values are ideal for making coffee.

4. Water temperature: international standard coffee machine water temperature requirements are 90°C, but also according to the degree of coffee beans roasting to adjust. If the coffee beans are roasted deeply, the outlet temperature of the coffee machine should be reduced, otherwise the coffee extracted is easy to have a burnt taste and bitter taste. SPR shop suitable for use with 90°C to 91°C water temperature production.

Note: The outlet temperature of coffee production refers to the outlet temperature of the machine head, which is different from the temperature of the direct hot water output of the boiler.

2: Choice of coffee beans

1. The main characteristics of Arabica(also known as Alpine Bean):

The smell of fragrant is stronger;

It is not easy to have bitter taste;

Creama(coffee oil) content is moderate;

Higher acidity;

Caffeine content is 30 -40% of Robusta.

2. The main characteristics of Robusta:

poor aroma;

It is easy to have bitter taste after deep baking;

Creama more;

Low acidity;

High in caffeine.

3: Preservation of coffee beans

1. Unopened coffee beans:

Suitable for storage in a cool, well-ventilated environment, suitable for temperature 18°C-22°C. As far as possible, do not put it in too dry place (humidity below 54% is too dry), so its preservation environment requirements are similar to red wine.

2. Opened coffee beans:

Coffee beans in contact with the air at the same time, its flavor began to lose, and a complete coffee beans and air contact area is limited, but coffee beans ground that is formed powder, there are countless faces and air contact, so that the loss of flavor accelerated. Therefore, when making coffee, grind it as much as possible, so as to ensure the quality of each cup of coffee. As for the preservation of the opened coffee beans, it is suitable for sealed preservation, but do not place it in a too humid environment, because the coffee beans are afraid of moisture, and the fat of the coffee beans is easy to lose, and the flavor will also deteriorate.

Coffee bean preservation points:

Coffee beans, whether opened or not, are afraid of high humidity.

Coffee beans, whether opened or not, should not be preserved in a mixed environment, especially in the refrigerator.

After opening the coffee beans, as long as the correct packaging is sealed, it is acceptable to use within three days (up to five days), but also pay attention to the preservation environment.

Ground coffee beans are best used immediately.

human factors

1. Basal espresso:

Barista(barista) should know how to taste espresso, because as long as espresso is perfectly made, other fancy coffees are easy to ensure quality, so espresso is the basis of Italian coffee; so to master Italian coffee, you must first learn how to drink and taste espresso.