The use of incense, or “Levona” as it is called, is alluded to in the novels, but is not described in detail. In general it is usually held that incense is manufactured by the Caste of Perfumers working with the caste of Charcoal Makers and the caste of Spice Merchants. But these comments were made by an outside observer who obviously did not fully understand the high nature of the art and is referring only to incense sticks, rather than the blending of the pure gums and resins, which is a magickal, even priestly art. It is significant that John Norman refers to incense as “levona” as that word is closely related to “Levantine”, the incense lands. That in turn derives from the Arabic word Luban, which means frankincense. Having said that , historically the resin from the Levant would have been Terebinth, not frankincense. But I digress.
Most of the named spices of Gor are almost all identical to the spices of Earth, ie peppers, cloves, cinnamon etc. So we are being completely authentic in our usage of those plants.