: The book identifies a shared psycho-sexual technique at the root of both Asian and European esoteric systems, intended for spiritual transmutation. 2. The Philosophy: Tantric Alchemy

In a broader sense, a "Tantric Alchemist" is a practitioner who views the body and its energies as a laboratory for spiritual transformation.

Published originally in 2011, this work explores the intersection of Western occultism and Eastern mysticism.

: Levenda uses the life of Thomas Vaughan , a 17th-century Welsh alchemist, to argue that Western alchemy and Indian Tantra are fundamentally the same.

: The book decodes the surreal, symbolic prose of Western alchemists through the lens of Tantric "twilight language"—a coded vocabulary for esoteric practices.