What are the ways to use filter paper? Does cold extract coffee need to be filtered? Can a mocha pot use filter paper? How to filter coffee residue?

Yesterday, Qianjie shared that the difference between filter paper and filter paper is as big as that between people and orangutans. because the theme is filter paper, many friends asked other questions about filter paper at the bottom of the comments area. For example: "in addition to hand-brewed coffee, how to use filter paper", "mocha pot can use filter paper" and so on. Very good! Success helped Qianjie find today's topic! )

Although hand-brewed coffee is the main way to use filter paper, in other extraction methods, there will be more or less demand for filter paper. And in different use cases, the function of filter paper will be different (but the essence is filtering). Well, today, Qianjie will share what kind of coffee filter paper is used to extract coffee besides hand-brewed coffee, and what are the differences?

First, cold-extracted coffee when it comes to the use of filter paper other than hand-brewing, we have to mention cold-extracted coffee first. after all, cold-extracted coffee has no small demand for filter paper. As we all know, the production of cold-extracted coffee is to seal the coffee powder with a proper proportion of normal temperature water, and then put it into the refrigerator for cold soaking and extraction. When the extraction is completed, we can not directly pour out the coffee grounds, but we need to filter out the coffee grounds through the filter paper and get the clean coffee liquid before we can produce or drink it.

The reason is very simple, because the extraction method is soaking, the coffee liquid has already been mixed with a large amount of coffee powder. If it is not filtered out through filter paper, the experience of cold-extracted coffee will be greatly reduced by the presence of a large amount of coffee powder. Maybe a friend is about to say, "if you use your own cold extraction bottle, don't you have to do it too much?" I don't know! Why? because although there are already cold extraction bottles specially designed for cold extraction soaking, most of these bottles are equipped with filters to isolate coffee powder. However, these filters can not isolate all the coffee powder. Because of the need to ensure that water and coffee powder can be in full contact. For this reason, the aperture of the filter screen can not be set too small.

As a result, a lot of coffee powder with smaller particle size will run out of the filter during soaking, not only fine powder, but also larger particles. If we do not filter again after the extraction is completed, then the presence of too much coffee powder will affect the overall experience of coffee (depending on the cold extraction bottle filter used), for example, the taste is very rough. Therefore, after the cold-extracted coffee is soaked, we will use filter paper for secondary filtration.

Second, ice drop coffee ice drop coffee is also a regular user of filter paper, usually make a pot of ice drop coffee before the street will use two round filter paper. One is placed at the bottom of the filter cup, and the other is placed on top of the coffee powder (one is two, or one is fine). Although they are the same filter paper, their functions are different because they are in different places.

The filter paper placed at the bottom of the filter cup is mainly used to filter coffee powder to prevent coffee powder from being added to coffee, while the filter paper placed on the top of coffee powder plays the role of dispersing water droplets and reducing the penetration of dripping water droplets. at the same time, this small amount of water is evenly distributed to the coffee powder below to ensure that all coffee powder can be extracted in the same way.

Third, the production of espresso can also use filter paper, and its use will be more extensive. For example, we can place the filter paper on the top of the pressed powder, at the bottom of the powder bowl, or at the outlet. As said in front of the street, they play different roles in different locations. If we place the filter paper on top of the pressed powder, the role of the filter paper in the extraction is to distribute the hot water evenly and reduce the coffee powder that comes into contact with the water diversion net to keep it clean. (that's true, but the effect is not significant.)

If the filter paper is placed at the bottom of the powder bowl, the role of the filter paper in the extraction will be to increase the cleanliness of espresso. Why are there tiger stripes in coffee? Qianjie mentioned in this article that because the filtering performance of the powder bowl is not strong enough, some coffee powder will seep out together with the coffee liquid. However, when we put 1 or 2 sheets of filter paper at the bottom of the powder bowl, it is equivalent to increasing the filtering capacity of the powder bowl, greatly reducing the amount of fine powder that can be released, so that the concentrate can have a cleaner performance.

However, it is worth noting that when we put the filter paper at the bottom of the powder bowl, the extraction of espresso will increase the flow rate due to the change of structure. For example, the use time of espresso normally extracted in Qianjie is 30 seconds, while the extraction time is reduced to 25 seconds after adding filter paper. The 5-second difference leads to an obvious lack of extraction of coffee, so we need to adjust the grinding when we place the filter paper at the bottom of the powder bowl. Finally, the filter paper will be installed in the outlet position! Here, the main role of filter paper is to filter out the coffee oil.

If we want to make a better cup of American coffee, maybe removing the coffee oil will be a good choice! This is a small "folk prescription" that Qianjie shared before. The fine powder contained in the oil will increase the bitterness of the coffee and decrease the cleanliness. Although the behavior of adding filter paper to the powder bowl can isolate a large amount of fine powder, it is more troublesome because it will change the extraction of coffee. Therefore, if we want American coffee to have a better performance without adjusting the grinding degree, we can isolate the grease and fine powder by placing the filter paper in the outlet. (but the filtering speed is too slow, so Qianjie suggests using other filters with less good filtering performance.)

Fourth, mocha pot front street at the beginning mentioned that yesterday, a friend left a message in the comment area whether the mocha pot needs to use filter paper, you can have it, but it mainly depends on the way to use the mocha pot coffee.

When our mocha pot coffee is used to make black coffee, then we can choose to put a filter paper on the coffee powder bed, which can effectively prevent the exudation of fine powder and give the coffee a cleaner taste. The principle is the same as the filter paper used in the coffee machine.

If the way to use our mocha pot coffee is milk coffee, then there is no need to use filter paper. Because the existence of the right amount of fine powder can still increase the alcohol thickness of coffee, at the same time make the taste of coffee more prominent, can compete with the taste of milk. So the above is the way that Qianjie thinks filter paper can be used in coffee making. If there are other ways to use it, you are welcome to add it at the bottom of the comments area.

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