Copal (copalli in Nahuatl) is an incense made from the resin of the protium copal tree. It is considered sacred by many peoples of Mesoamerica, and is the primary incense offered to ancestors and Divinities during ritual and ceremony.

Frankincense and Styrax are suitable replacements for copal if none can be found, or if one has trouble finding it in a form other than pure resin. There are many reasons why a practitioner wouldn't want to burn copal on charcoal disks: it can be more dangerous than stick incense when burning in small spaces with poor ventilation, or less of a fire hazard if burning outdoors. If one has a sensitivity to smoke, using an oil diffuser might also be preferable.