In contrast to The Internationalization of Ayahuasca’s dispassionate, sometimes technical language, A Hallucinogenic Tea is expressive, also shambolic, given to nonsequiturs and exclamation marks (‘Ayahuasca shamanism is a hot topic!’). The differences in these books, in the end, point to how a biological, taken up as spiritual equipment, challenges standard categories of drugs and religion, a result that perhaps says less about ayahuasca than the contemporary anthropological world.