Smudge BowlTerra Cotta Smudge Bowl This Smudge Bowl is an affordable alternative to our Abalone Shell. Its made of terra cotta and can resist the heat of an Incense charcoal, however it is recommended to add a layer of sand on the bottom. This layer of sand makes it easier to clean the bowl of the residue after smudging. How to Burn Incense Resins: Light the incense charcoal with matches or lighter for about 20 seconds until it self ignites. Use tongs to hold it