Detailed steps on how to fold hand-brewed coffee filter paper and filter cloth

Detailed steps on how to fold hand-brewed coffee filter paper and filter cloth

Improving the thickness difference is only one of the problems, and then the problem of adjusting the exhaust volume has to be solved.

Pressing the filter paper of different thickness together is to simulate the initial draught of flannel, but

In this way, it is still impossible to use only filter paper to adjust the amount of water, so a filter cup is also needed.

Many people misunderstand the function of filter cup and think that it is just a shelf similar to filter paper.

That's all. In fact, it is the biggest contributor to the regulation of drainage and exhaust. In order to make the water in the filter paper adjustable

First of all, the amount of water must be concentrated, so the filter cup cannot be designed in the shape of a straight cylinder. It's the most common now.

The fan-shaped filter cup is a good choice.

No matter from the front or side, it is wide at the top and narrow at the bottom, and this shape is conducive to the concentration of water. If it is replaced by an upright cylinder or cube, the weight of the water will be dispersed.

And the top is round, and with a larger area, so that particles can be evenly distributed as far as possible to reduce accumulation.

After understanding the principle of the basic shape of the filter cup, we will then introduce the internal design-ribs and exhaust vents.

Kalita three-hole fan filter cup

The use of the filter cup is to facilitate the adjustment of the speed of exhaust and water flow, so these conditions must still be established after placing the filter paper, and after touching the water, the filter paper must become heavier and stick to the wall of the filter cup. At this time, if there is nothing to separate it, it is bound to hinder the speed of the water flow.

The ribs on the wall of the cup are designed for this purpose. When selecting a filter cup, you can use your hand to touch the depth of the ribs, if it feels obvious, it meets the basic requirements.

Then there is the gap between the ribs and the ribs, which must have at least one rib width to ensure the flow of air; if the interval is less than the width of the ribs, it is not recommended.

Finally, the interior of the filter cup should be arranged with ribs, if any side is missing, it is unqualified.

The demonstration filter cup selected this time is Kalita three-hole fan-shaped filter cup.

The inventor of the fan-shaped filter cup is not Kalita, but a lady named Melita who lives in Germany. After spreading to Japan, Kalita has been modified with reference to the prototype and has become a basic hand-flushing tool popular all over the world.

Kalita 101fan-shaped filter cup is currently highly used in coffee shops and personal use, which also confirms the stability of its architecture. We chose it as a basic cooking tool for this reason.