A 0.15mm thick, high density, one-side crepe filter works optimally at a temperature of 92℃.

In order to let water flow at an ideal speed for each roasting level, each paper is made by different paper structure. Water speed is adjusted automatically thanks to the different structure.

There is no crepe inside the filter paper, so the inside surface area is small. Fine coffee powders attach within this small area, so little water path is left, and the water will build up inside the paper filter. By building up water, plenty of aroma comes out. Furthermore, thanks to the outside crepe, the liquid coffee flows smoothly. Because its paper density is high, almost all fine powder is removed perfectly. You get a clean cup of coffee full of aroma.

official website: https://cafec-jp.com/products/filterpaper/