Easy and ecological coffee preparation? Dripper and filter in one product? All this is the Cera Filter, ideal for preparing 2 to 4 cups of delicious coffee without the need to use disposable filters. The body of the filter is made of porous ceramic with countless holes with a diameter of several microns, which filter coffee as well as any paper filter.
What is this mysterious substance?
The special ceramic from which the filter is made is built on 400 years of experience of the ceramic company Arita Earthwares. The exact production process is, of course, secret, but the little we know is that in Arita they wet a mixture of special clay with water from a natural well and then thoroughly process the resulting material by hand. The shaped filter is then baked for dozens of hours in a ceramic oven, which gives the finished product unusual strength.
In addition, the material uses a special property - the far infrared effect, which ensures the rapid spread of heat through the filter and the removal of the smallest possible amount of thermal energy from the coffee. This feature is the holy grail that every dripper manufacturer strives to achieve.
You can also meet this porous ceramic outside the coffee shop - nowadays it is widely used in water filters, air purifiers and even filters for car exhausts.
How to wash the Cera Filter
1. Removal of coffee
Wait for the filter to cool down and knock the coffee residue out of the filter with the bottom facing up. Do this as soon as possible, as the residue is harder to remove after the coffee has dried.
2. Wash with water
Wash the Cera filter in water. Rinse it thoroughly to remove any coffee grounds. Do not scrub the filter with a brush or wire, as this could damage it. The filter also cannot be washed in the dishwasher.
3. Hot water bath
Place the filter in hot water for a few minutes to remove the coffee oil. Removal is complete when clear water flows out after washing the filter. When storing, allow the filter to dry before storage to prevent mold growth.
And once a year...
To give the filter a good clean once in a while, place it on the stove (gas or electric) and let the filter burn on medium heat until it stops smoking. Then let the filter cool down and wash it with water (cold is enough).
If you're using induction and don't have access to a fire, you can boil the filter in a pot of water with a little baking soda to help remove the coffee oils.