What is a dual-chamber filter paper? How to make coffee with "Mandarin Duck Pot Filter Paper"? How to make hand-brewed coffee?
Every once in a while, some novel coffee utensils appear in the coffee circle. In addition to the iterative coffee beans, the update of these appliances may be the biggest concern of Qianjie. Because they can always bring a lot of strange ways to play, making our coffee more interesting. Recently, Qianjie's eyes have focused on a filter paper launched last year because its design is really different from the conventional design. How chic is it? To put it this way, we can enjoy the experience of "mandarin duck pot" on hand-brewed coffee. Because this filter paper has two separate spaces to hold coffee powder after it is opened, it is no different from the mandarin duck pot in the hot pot, so it has been called "mandarin duck pot filter paper" by netizens on the Internet.
Formerly known as double-chamber filter paper "Dual chamber Filter", it is a product developed by Sibarist, a Spanish coffee utensil manufacturer. The biggest difference between it and conventional filter paper is that a "partition" is designed in the middle of the filter paper, which can divide the space of the filter paper into two. Well, through the official release of the video Qianjie, it is found that the density of the partition wall of this filter paper is relatively high, and it is difficult for the hot water injected on both sides to penetrate through the partition wall, so it can be said to be a veritable "wall". So Qianjie was going to place an order for a package to play, but suddenly, Qianjie found out...
30 sheets of double-chamber filter paper, the price is 37.44 euros. In RMB, it is about 283 yuan, and the average filter paper is "9.4"! How many bags of coffee beans can be bought here?
No wonder there are few articles on the Internet to evaluate the filter paper. For disposable consumables such as filter paper, this price is really outrageous and does not apply to ordinary people. If everyone is thinking about whether or not to worry about the cost of filter paper as in front of the street, let's first make a replacement version and see if the effect of this "mandarin duck pot filter paper" is really worth spending so much.
The production of the flat version is very simple, which is to use two pieces of 01 filter paper in the tapered filter cup of model 02. The specific approach is to fold the two pieces of filter paper in accordance with the normal steps, and then plug them face to face into the filter cup, so that a replacement of the "two-chamber filter paper" is completed.
But if we want to have a better isolation effect and block the penetration of coffee liquid like the filter paper partition in the official picture, we can use non-woven filter paper made of special material, because without contact with coffee powder, filter paper is very difficult to penetrate.
After we re-engrave the filter paper, we will find that we will face a lot more problems than we thought. You can imagine online how to use such a chic filter paper and how to flush it.
What should be considered when using "mandarin duck pot" filter paper? It is conceivable that the "mandarin duck pot" filter paper is obviously invented for beans with different characteristics (such as: different degrees of baking) can be concentrated in one cooking. After all, if the tonality of the coffee beans is all the same, we just need to mix and cook together after grinding, and there is no need to deliberately isolate them. The extraction parameters of coffee beans with different characteristics are different. Among all the parameters, what we need to solve most is the problem of water temperature.

Because the water temperature cannot be regulated frequently in the process of brewing, if we are cooking two coffee beans with different roasting levels, we need at least two kettles. And the best is temperature control, if it is not temperature control, then our water temperature control will be very troublesome, this is the first point.
When we solve the problem of water temperature, then there is the problem of cooking, and this is also the main problem. In brewing, because we need to brew two different coffee beans at the same time, we need to constantly switch kettles for brewing. At the same time, it is also necessary to have excellent math skills, because two beans are in the same filter cup and share the same electronic scale, so the amount of water injected into the two beans will be superimposed.
Therefore, we need to list the cooking plan in advance before brewing, otherwise it will easily lead to the deviation of the ratio of powder to water from the target. Because of this, the "double hedging" (two people brewing the same pot of coffee together) left by netizens in the comment area cannot be implemented (unless some kind of seasonal method is used). The above are the things you need to pay attention to when using this chic filter paper (just need to pay attention, depending on the actual situation when cooking). Then, Qianjie will demonstrate the chic punching method of this "mandarin duck pot filter paper" for reference only.
How to use the "mandarin duck pot" filter paper? Since the two coffees that need to be brewed will be directly mixed (that is, blended), we need to find two beans that match and complement each other in taste and taste, so the matching skills shared in front of the street can be used here! Three sets of matching were tried in Qianjie here, and then shared with the guests and friends of the store to drink. Finally, the combination with the most favorable comments was Mozart Kafa (Mozart 13g, Kafa 7g). The parameters are as follows: grinding degree: Mozart is 9.5scale of ek43, card method is 10scale of ek43. Water temperature: 90 °C for Mozart; 92 °C for Kafa; ratio of powder to water: 1:15: three-stage filter cup: V60 (model 02)
When everything is ready, Qianjie chooses to start with Kafa. First, pour 20ml hot water into the steam for 30 seconds (time is pressed at the same time for water injection).
When the time came for 20 seconds, we began to steam Mozart so that Mozart could finish steaming just the next time Kafa finished injecting water. The amount of water used in this steaming is 25ml, and the amount of water in the electronic scale will accumulate to 45ml.
30 seconds after injecting Mozart's stifling water, we can inject the second stage of hot water from the brewing Kafa, 50ml (the amount of water from the electronic scale goes to 95ml). Because the space in the filter cup is split, we need to reduce the flow of water and increase the position of the water injection so that we can stir the coffee enough. After the injection, the other side is also steaming, so we change the kettle into Mozart's second section of hot water 100ml (the amount of water from the electronic scale will go to 195ml); after the injection, cut the kettle and jump to Kafana to inject the last section of hot water 35ml (the amount of water from the electronic scale will go to 230ml); and finally cut the pot to inject Mozart's last section of hot water 70ml (the amount of water from the electronic scale will go to 300ml). At this point, the cooking is finished.

With a total time of 2 minutes and 15 seconds, the main body of the coffee is still the taste of Mozart itself, and because of the addition of Kafa, the flavor complexity of the coffee is increased, so the taste is more round and cleaner. Although I got a good coffee experience in the end, the preparation from the beginning to the end was very tedious. Whether it is the control of water temperature, the selection of coffee beans and their proportion (catch a few groups of lucky guests and friends to try and make mistakes, dare again next time), the calculation of parameters when cooking, etc., no kidding, it is very troublesome. Unless you use coffee beans with high similarity in roasting and handling, you can use the same water temperature, which can save a lot of trouble. But as Qianjie said, if we choose this way, it would be easier to mix them all together and cook them as usual.
But this may also be because Qianjie has not discovered the real potential of this kind of filter paper, so you might as well try and experiment with this special "mandarin duck pot" filter paper.
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