What's the difference between hand-brewed coffee v60 KalitaMagna wave filter cup? Does water injection need to be changed?
Some time ago, Qianjie shared a way to cook a good-looking powder pit. There are new buddies in the backstage private message Qianjie. "is the circle of the fan filter cup also round?" "what do fan-shaped filter cups need to pay attention to in water injection?"
In order to take care of the new friends who have just come into contact with hand-brewed coffee and do not know about all kinds of filter cups, Qianjie will share with you the details of different filter cups and water injection circles.
Why do you want to inject water in circles?
The purpose of circular water injection is to stir and scour the coffee powder layer with the help of water column, assist the extraction of coffee flavor substances by water, and finally achieve the uniform extraction of coffee powder layer. Key points of painting: uniform extraction is the main purpose of our circular water injection.
At present, there are three main types of hand filter cups in the market: conical filter cup, fan-shaped filter cup and flat-bottomed filter cup. Today, the front street will take the V60 (conical filter cup), kalita (fan filter cup) and wave filter cup (flat bottom filter cup) as examples.
1. V60 tapered filter cup
As the "facade responsibility" of the tapered filter cup, V60 must be no stranger to it. From the side door to open the filter cup, the coffee powder layer presents a triangle in the tapered filter cup, and the closer the hole in the center is, the thicker the coffee powder layer is, and vice versa.
Therefore, when we use the conical filter cup to inject water around the circle, we need to start the water injection from the center, slowly walk the round "mosquito incense" outward, and then slowly circle back to the center when it comes to the outermost circle, so as to achieve the purpose of uniform extraction.
2. Kalita sector filter cup
Kalita filter cup is a classic three-hole fan-shaped filter cup, viewed from the side, showing a wide upper and lower narrow shape, like a fan-shaped shape, which is conducive to the concentration of water, while the top is oval, the purpose of making a wider area is to make coffee particles evenly distributed and reduce stacking, unlike the tapered filter cup powder layer thickness disparity.
Because the opening of the fan-shaped filter cup is oval, it is not as easy to achieve uniform water injection as the conical filter cup, so the circular water injection mainly takes the "oval mosquito-repellent incense". Also from the center of water injection, "mosquito incense" route from round to oval, in order to achieve the purpose of uniform extraction.
3. Wave filter cup (flat bottom filter cup)
Wave filter cup can be regarded as the "ancestor" of flat-bottomed (/ cake) filter cup, which was first designed and launched by kalita (slightly later than fan-shaped filter cup). The flat bottom filter cup retains the circular opening like the conical filter cup and the special flat bottom design, which makes the powder layer more uniform up and down in the filter cup.
The flat-bottomed filter cup needs to be used with special filter paper, because it is very similar to the shape of the cupcake, so the flat-bottomed filter cup is also called cake filter cup. The special shape of the filter paper weakens the function of the filter cup diversion groove, which also improves the requirements of our water injection, when the water flow can not touch the concave filter paper to prevent the collapse of the powder wall.
Like the tapered filter cup, the water injection starts from the center and slowly walks outward in a round "mosquito-repellent incense", but the largest route of the circle is that the cake filter paper creases inward, and finally slowly comes back to the center.
Hand instability, water injection flow suddenly large and small how to do?
It is also reasonable for a friend who has just come into contact with hand-made coffee to control the flow of water unsatisfactorily. If we want to reduce the influence of brewing techniques on coffee extraction, we can use fixed-point central water injection after steaming to extract coffee with the help of water diffusion and soaking, so that we only need to concentrate on controlling the size of the water flow. there is no need to worry about unstable water flow to make coffee powder stir unevenly, resulting in uneven extraction.
The circle route explained here in Qianjie is mainly to let the buddies who have just come into contact with the introduction of hand-brewing coffee to understand and familiarize themselves with the filter cup in their hands more quickly. In fact, there are too many types of filter cups from model to material. When your water flow practice is stable and controllable, you can try more different filter cups with different cooking methods, and experiment to compare the specific differences of each filter cup. Summarize your own understanding of the filter cup.
Finally, Qianjie believes that there are thousands of ways to brew a good cup of coffee, as long as we study and practice more, it is not difficult to easily handle all kinds of filter cups and techniques.
-END-
Front Street Cafe
No. 10 Baoqian street, Yandun road, Dongshankou, Yuexiu district, Guangzhou, Guangdong province
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