Binchotan is a type of activated charcoal made from branches. It is known for its ability to soften water, enrich it with beneficial minerals, and absorb unwanted tastes and odors, such as chlorine. Simply place the activated charcoal in the Eau Good bottle, the Eau Carafe glass carafe, or any bottle or carafe. Fill it with drinking water or tap water. Wait for the charcoal to do its job; overnight is ideal, but you will notice the taste difference after just one hour. Enjoy delicious water! If you refill the Eau Good bottle once a day, it will last for about three months. You can then refresh the activated charcoal for another three months by boiling it for 10 minutes and letting it dry.