This method is typically used to scent a small room, by heating the wood chips or In-koh Pressed Incense or Kneaded Incense next to a burning charcoal.
Ignite the corner of a piece of charcoal by using a match or lighter. Place the charcoal on the top of the ash and wait until it becomes greyish-white in color.
When half of the charcoal has turned greyish-white, cover it with a thin layer of ash. Use a three-legged burner specifically designed to hold hot ash.
Place wood chips directly over the heated part of the ash (it's better to heat the wood chips by hot ash rather than burning them directly on the charcoal).
For this method, use wood chips that are approximately 5×2 mm wide.
You may enjoy Pressed incense and kneaded incense using this same method.