Ayahuasca — also known as the tea, the vine, and la purga — is a brew made from the leaves of the Psychotria viridis shrub along with the stalks of the Banisteriopsis caapi vine, though other plants and ingredients can be added as well (1Trusted Source).
This drink was used for spiritual and religious purposes by ancient Amazonian tribes and is still used as a sacred beverage by some religious communities in Brazil and North America, including the Santo Daime.
Traditionally, a shaman or curandero — an experienced healer who leads Ayahuasca ceremonies — prepares the brew by boiling torn leaves of the Psychotria viridis shrub and stalks of the Banisteriopsis caapi vine in water.
The Banisteriopsis caapi vine is cleaned and smashed before being boiled to increase the extraction of its medicinal compounds.
When the brew has reduced to the shaman’s liking, the water is removed and reserved, leaving behind the plant material. This process is repeated until a highly concentrated liquid is produced. Once cooled, the brew is strained to remove impurities.