1. No use of paper and plastic
2. Zero waste in whole brewing process to reduce waste in the use of outdoor (glamping, tiny house)
3. More extraction of oil in the age of „third wave coffee“
4. Only high quality micro porous ceramic is used in CERAFIL
5. No clogging even in 2 days leaving on the soak holder
6. Must be beautiful as handmade pottery
7. Must be functional as a coffee gear
8. More aroma and oil than paper filter
9. Longer usage and more eco friendly than flannel and paper
10. Easier cleaning and maintenance without using fire and heat
11. Since 99% of coffee is water, so CERAFIL must affect water before brewing coffee
12. Filter and dripper will be united in one gear, for the first time in the world.
13. Users will be excited to buy, have, use, show and send as gift.

Paper filter was originally invented with Mrs Melitta Bentz of Germany, who was housewife and happened to filtered coffee with paper, and patented it, great invention coffee history.

https://en.wikipedia.org/wiki/Melitta_Bentz

1. sometimes paper smells.
2. users need to rinse paper before brewing coffee
3. we cut 1.5 millions of trees to produce coffee paper filter per a year, it’s not eco friendly in this era.
4. If you don’t have paper in your home, you can’t drink coffee.
5. Sometimes the pores is too tight, can’t brew coffee oil enough.

Flannel filter was originally developed by the metal artisan of France who brewed soup stock. He used flannel to drip coffee, and it worked well. Flannel could reduce sediment singnificantly compared to mesh made of metal. It was also a great invention and leap for coffee to be drunk among many people in Europe.

ttps://www.perfectdailygrind.com/2016/01/coffee-sock-old-school-filters-that-save-the-planet/

1. Flannel brewing tastes very good however washing and maintenance are sometimes troublesome.
2. Sometimes color changes and sediment isn’t washed off enough.
3. Flannel doesn’t stand alone, so it requires dripper or other equipment.
4. After all, it needs to be replaced like paper.

Metal filter was originally invented in France in 1780 and it was patented in the name of Bigging in 1802. It was also a great improvement of brewing coffee however unfortunately, in that era grinding mill was also developed, so people got more aware of aroma and flavor of coffee. Biggin looked like modern tea pot, filtering mesh was equipped in the pot and not separated from the coffee server. In a way it was advanced design.

http://www.web-books.com/Classics/ON/B0/B701/41MB701.html

1. Metal filter can brew more oil compared to paper, however it extracts more sediment too.
2. It is excellent in filtering however the metal material itseld doesn‘ have any function.
3. It can’t prevent leakage so after all it requires supporting material as dripper, and sometimes it’s plastic.
4. It can be used repeatedly however it doesn’t affect water and coffee positively.

Ceramic coffee filter was born in Japan in 1994. After the long age of percolator,cage, hot pot, metal, flannel and paper, coffee brewing material itself was refreshed in Japan where still has short history of coffee.
Unlike other materials such as glass, paper, porcelain, flannel, plastic, ceramic has function of filtering with FIR (Far Infrared Radiation) that works to release tightness of water molecule and affects enhancing coffee aroma (sweetness and flavor).

1. Only porous ceramic has FIR effect but because of this advantage, cerami has problem of clogging.
2. Existing ceramic filter often requires cleaning by fire. In modern house people has IH oven, so in these house they can’t clean existing ceramic filter.
3. Existing ceramic filter still needs dripper to make filter stand.
4. Existing ceramic filter suggest coarse grinding only. It limits freedom to enjoy coffee.
5. Existing ceramic filter requires heat to clean, and it’s obviously dangerous.
6. Existing ceramic filter is sometimes broken when being cooled down suddenly.
7. Exisitng ceramic filter is not free from problem of clogging. More than 50% users were forced to stop using due to clogging, sometimes after using 4-5 times only.