They are commonly used for burning raisins, herbs and incense. Use tongs to hold charcoal round at a reasonable distance to light it up with a match or a lighter for about 15 to 20 seconds until it ignites. Use caution in handling the disc as it will become very hot. It will start to turn in orange-red color. Never handle the disk with your bare hands upon lighting it up. Lastly, place the disk into a burn safe plate, bowl or cauldron and then add your herbs and raisins on top of the disc. Enjoy the aroma and scent of your chosen herbs whether it be for leisure use, cleansing or ritualistic purposes.