To burn fill a heat proof container , such as a cauldron, with earth or sand. Be sure to place a small saucer or flat pillar candle holder under burner IT WILL GET VERY HOT ! Next light a disk of charcoal using tongs. It will light one edge and then place on top of sand . It takes a few minutes but the disk will turn white when it is ready.Place a small amount of resin incense or herbs on top of charcoal adding more if you like as it burns away . You can only use the charcoal disk once ,you can not relight it and it will get very hot.