Choice of filter paper for fine coffee: raw pulp filter paper or bleached filter paper

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Bleached filter paper

The main difference between bleached and unbleached filter paper is whether it is bleached, bleached with a small amount of chlorine, or bleached with oxygen.

Although the safety of chlorine bleached filter paper was questioned in the 1980s, it has now been proved to be safe in brewing coffee. In addition, bleaching filter paper will not add extra flavor to your coffee when making coffee.

However, bleaching filter paper is still controversial about its environmental impact. In fact, the 2012 Journal of Environmental Engineering and Management published that the chlorine bleaching process in the factory will have a great impact on the environment; on the contrary, oxygen bleaching has a lower impact on the environment, and all major filter paper brands indicate the method of bleaching filter paper on the packaging.

Raw pulp filter paper

Raw pulp filter paper does not have a bright white appearance like bleached filter paper, but it is slightly better for the environment in the manufacturing process, because unbleached filter paper does not require so much programming.

Most of the filter paper we see is unbleached, and the natural paper is brown (after all, trees are the raw materials), but unfortunately, if you use unbleached filter paper when making coffee without first soaking it with hot water, you are likely to drink the smell of paper in your coffee.

In other words, you may drink the smell of unbleached filter paper, depending on the quality of the filter paper. However, no matter what brand or how the filter paper is made, it is right to wet the filter paper before brewing.