Do you need filter paper to make coffee by hand? What is the effect of non-wet filter paper when brewing coffee?
One day before the street barista was brewing a pot of ice hand and hot hand to make coffee, a guest asked, "Why did you two, one with wet filter paper and the other without wet?"
Is wetting filter paper a necessary action before cooking? If not, when will you need wet filter paper? If you want to know exactly why, listen to Qianjie analysis.
![图片](https://www.gafei.com/uploadfile/202308/6fc99e4ff8d645.jpg)
The purpose of wetting filter paper:
1. Wash filter paper to remove odor
Some friends may wonder about 🤔️, but now there is no paper flavor filter paper bleached by bioactive enzymes. As long as the brand of filter paper you buy is more reliable, you shouldn't have to worry about it.
But you may have overlooked one point: how do you store filter paper? What is the storage environment like? Qianjie once met a friend with filter paper open on the shelf, but he is an old smoker and often smokes at home alone, so you can imagine what the filter paper will become.
It can be said that, "Cheng also has no paper flavor filter paper, failure also has no paper flavor filter paper", filter paper without flavor will be more attractive. Of course, you don't need to consider this if you seal the filter paper separately.
![图片](https://www.gafei.com/uploadfile/202308/6433a7f9a2acb20.jpg)
2. Preheat the filter cup and the pot
This needs to be considered in combination with the material of the filter cup you use. if you have a filter cup made of resin, which does not absorb heat and has poor heat preservation, preheating has little effect on cooking, but when you use a ceramic filter cup, it is necessary to preheat the filter cup while wetting the filter paper. (friends who are interested in the thermal insulation effect of filter cup can: click here)
The preheating sharing pot can ensure that after the coffee liquid is extracted, the temperature will not drop too much, and you can better taste the flavor of the coffee.
![图片](https://www.gafei.com/uploadfile/202308/25f6deb7b7d112f.jpg)
3. Fit the filter cup
When you are not confident about your ability to fold the filter paper, you can press the filter paper by hand and wet it with water, which can help us to make the filter cup fit better. Of course, if the technology is not good, the filter paper and the filter cup do not match, the wet will not fit.
![图片](https://www.gafei.com/uploadfile/202308/db1174a07d1c838.jpg)
If you want your coffee extract to be more uniform and reduce the influence of filter paper, then the following three points about filter paper are worth considering.
1. Steam exhaust.
The filter paper will soften after wetting and stick to the filter cup, and the grooves on the filter cup can not support the filter paper, which will affect the effect of steaming exhaust.
2. After the filter paper is wet, the coffee powder will be extracted in advance.
"extraction" starts from the moment the coffee powder comes into contact with water. If you wet the filter paper and pour the dry coffee powder into it, the coffee powder close to the filter paper will be wet, which will lead to the extraction of some coffee powder in advance.
![图片](https://www.gafei.com/uploadfile/202308/e457678db0a6a.jpg)
3. The water absorption of filter paper.
The water absorption of a piece of filter paper is about 8g, if it is all wet with water, then the extracted coffee liquid will not penetrate upward, so the filter paper that brews the coffee after wetting the filter paper is close to white; while the filter paper is not wet, the coffee liquid will permeate on the filter paper, this phenomenon is obvious when boiling deep baked beans, you can see the brown liquid infiltrating upward little by little.
![图片](https://www.gafei.com/uploadfile/202308/ff8cf60b04d6238.jpg)
Going back to the original guest's question, do you now know why Qianjie treats filter paper differently during heat flushing and ice flushing?
-END-
Front Street Cafe
No. 10 Baoqian street, Yandun road, Dongshankou, Yuexiu district, Guangzhou, Guangdong province
![图片](https://www.gafei.com/uploadfile/202308/67feb3b7fd1e2bd.jpg)
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