Does wetting and non-wetting coffee filter paper affect the extraction? Log filter paper is better than bleached filter paper.

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Guide reading

With the continuous development of boutique coffee, in addition to coffee filter cups, filter paper is also constantly reformed. From the size and shape of filter paper to the treatment of paper, all kinds of filter paper dazzle everyone and don't know how to choose. In front of this article, let's talk about which filter cups are suitable for filter paper of various shapes-do you have to wet the filter paper when making coffee by hand?

The shape of coffee filter paper

Our common filter paper shapes are tapered, fan-shaped (trapezoidal) and corrugated (cake cup-shaped). Different shapes of coffee filter paper correspond to different designs of filter cups. Common filter cups are roughly divided into conical filter cup, fan-shaped filter cup, cake filter cup and origami filter cup.

Conical filter paper: the angle of the filter paper is 60 °. It is suitable for single-hole conical filter cups such as V60 filter cup, KONO filter cup, infinite cross star filter cup, ice pupil filter cup, strawberry filter cup and so on. The type of tapered filter paper is divided into 01 and 02, No. 01 filter paper is suitable for 1-2 people, and No. 02 filter paper is suitable for 2-4 people.

Trapezoidal (fan) filter paper: filter paper is fan-shaped, suitable for Kalita, Melitta and smart cups. Trapezoidal filter paper models are divided into 101and 102101 for 1-2 people, and 102 filter paper for 2-4 people.

Corrugated (cake cup type) filter paper: the filter paper looks like the paper holder of the traditional cupcake, with a three-dimensional structure, flat bottom and uniform wavy folds around it. It is used in Kalita wave, Bonavita four-hole cake filter cup and origami filter cup. The types of corrugated filter paper are divided into: 155and 185155 are suitable for 1-2 people, and 185 filter paper is suitable for 2-4 people.

It is important to choose the appropriate shape and size of the filter paper!

The shape and size of the filter paper determine the fit degree between the filter paper and the filter cup. When the filter paper with mismatched shape can not fit perfectly with the filter cup, it is easy to cause the gap between the filter paper and the filter cup, which changes the diversion effect of the filter cup and leads to the negative effect of unequal coffee extraction.

The thickness of the paper

Different brands of filter paper thickness will be different, which determines the fiber structure of the paper, thickness will change the flow rate of water. Thin filter paper is easy to close the filter cup and restore the effect of the filter cup, but it can not be as thin as cicada wings. Thick filter paper will slow down the flow rate, but the filter effect will also be better.

How do we choose between log filter paper and bleached filter paper?

Log filter paper refers to unbleached filter paper, which is light brown and smells like paper. Bleached filter paper refers to the bleached filter paper, which is white and has no obvious paper smell. On the question of how to choose log filter paper and bleached filter paper, Qianjie is more inclined to bleach filter paper. Because the smell of the bleached filter paper is not obvious, it will not affect the taste of the coffee.

You may be worried about the toxicity of bleached paper. In fact, the famous coffee filter paper brands now use advanced enzyme bleaching. Unlike traditional chemical bleaching, enzyme bleaching uses bioactive enzymes for bleaching. It is widely used in the field of medicine. Therefore, in the purchase of coffee filter paper must choose a large brand, the price is reasonable, some too cheap filter paper regardless of material, size and bleaching technology can not be guaranteed.

Must the filter paper be moistened before making coffee by hand?

On this issue, brown friends mostly discuss it from three points of view: first, remove the smell of filter paper; second, filter paper can better fit the filter cup; third, preheat coffee utensils by the way.

About removing the smell of filter paper: Qianjie also said that because the log filter paper has not been bleached, it will have more or less the smell of paper, so those who use log filter paper need to wet the filter paper to reduce the effect of paper flavor on coffee flavor. The filter paper bleached with enzyme does not have to be wetted because it has no taste. If you use chemicals to bleach, there is no point in wetting, because the smell of chemicals is even greater than that of log paper, so don't use it any more when you smell uncomfortable when wetting.

Filter paper can better fit the filter cup: in fact, if you pour powder directly without wetting the filter paper, you can better let the filter paper stick to the filter, and the dry filter paper can be steamed and the wet filter paper will be steamed, the exhaust effect of the former will be better. Some coffee lovers will say that the non-wetting filter paper will absorb part of the coffee liquid when brewing the coffee paper, but it will also be the same when the filter paper is actually wetted. Compared with the same parameters and techniques, there is not much difference in the taste of coffee between wetting and non-wetting filter paper.

About preheating coffee utensils by the way: Qianjie believes that preheated coffee utensils are necessary! It is better to wet the filter paper than to preheat the filter paper when wetting the filter paper.

Last

In fact, there is no need to wrestle with the problem of wetting and non-wetting filter paper, just cook according to your own habits. Except for the problem of paper taste of log filter paper, one of the other two has no great influence, and the other one must. If there is a significant difference in flavor between wetting and non-wetting filter paper, Qianjie believes that there is something wrong with the brewing techniques and parameters, which leads to the difference in coffee flavor.

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