Why do you need cloth powder to make espresso? What is the effect of cloth powder on coffee extraction?

The steps of making espresso-powder, weighing powder, cloth powder, pressing powder.

Many people see that after the barista has concentrated and weighed the powder, they will slide their fingers around the surface of the coffee powder until it is flat, and some will turn it around with a flat divider and pick it up to make a flat noodle. A smooth surface is an important point in the process of making espresso.

Why do you want flat noodles? what is the purpose of the cloth?

Let's just give an example! Let's first take two 20g powder, one with a cloth powder ring and the other without a cloth powder machine to see the difference between the two.

● uses a cloth powder dispenser.

This is the distribution of coffee powder on the handle after receiving the powder. it can be clearly seen that it is in the shape of a slope.

After using the powder distributor to rotate, the powder surface is basically flat, and there is no obvious uneven feeling of pressing the powder. The flow rate is relatively uniform in the process of extraction.

Direct pressing of ● powder after receiving powder

After receiving the powder from the bean grinder, the powder layer is in the shape of a slope, and the front street partner does not distribute the powder directly with a powder hammer.

The obvious uneven distribution can be felt, and the powder hammer is tilted. In the process of forced flattening extraction, it is found that the flow rate suddenly increases and decreases.

This situation is because in the process of filling and pressing, some of them will be relatively dense and some of them will be relatively loose, resulting in uneven density of the powder layer. During extraction, the flow of water is easier to penetrate places with low density and low resistance. Resulting in uneven flow rate, the following problems are uneven extraction, coffee flavor defects and so on.

Stable production is very important for a cafe, every step may affect the flavor of coffee, if there is no cloth powder around, then can only use the most traditional method, finger powder.

How to operate it exactly?

Finger cloth powder, as the most traditional cloth powder method, pours the coffee powder into the powder bowl and pushes it back and forth with the index finger and the tiger mouth of the palm to make the coffee powder fall into the gap as far as possible to ensure that the coffee powder is evenly distributed.

At the same time, it should be noted that when distributing powder on the fingers, make sure that the fingers are pushed horizontally, and do not apply downward force. The cloth powder only plays the role of evenly distributing the coffee powder. The difficulty of finger powder lies in the need for more practice and instability, and more stringent hygiene requirements for operators to keep their hands clean and dry.

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