Are you familiar with activated carbon?

As its name suggests, it is carbon, but due to the tremendous number of tiny pores on its surface, it has the property of absorbing an astonishing amount of invisible substances such as nearby dirt and odors.

The thin black layer you see in air purifier filters is activated carbon.

By the way, have you ever seen extremely stylish Arita-ware coffee filters in general stores?

[Google link] Arita ware coffee filter

The "mellow and free of bitterness" claim for such products is exactly the same effect as activated carbon.

These kinds of filters are truly stylish and enhance quality of life, but they get clogged quickly and require maintenance each time.

Therefore, I thought it would be great to have disposable activated carbon that could be added to drinks like coffee to clarify their taste.

Bonus

By the way, the performance of activated carbon varies surprisingly by manufacturer 😲
The difference is noticeable the moment you open the bag.

It's not for food use, but for your reference, I'll tell you about a recommended product that is cheap and easily accessible to anyone 👌

In my experience, Mizusumashi Shoten (Chemical Technos) offers the cheapest and highest-performing product, which I repeatedly purchase.

[Amazon link] Japanese-made quality coconut shell activated carbon (granular, large grain, 5.0kg) with quality test report included 

It's great when you put it in a bag and place it in a trash can or fill an air purifier with it.