For drinking water :
 place 1 or more coals in a jug of water (1 coal for half liter of water). Leave for at least one hour after filling, and keep the stick permanently in the water.

mode d'emploi des charbons actifs binchotan - use of binchotan activated charcoals 

For tea : Place a stick with the water in your kettle, and heat. Perpare your tea by pourring water into the teapot, without the stick.