The Ayahuasca Ceremony
Two Brazilian churches built around the ceremony were founded independently in the twentieth century, and one of them won a landmark US Supreme Court case in 2006 protecting its sacramental use — a rare instance of an Amazonian ritual plant gaining explicit US legal religious protection.
Founding of Santo Daime (1930) and the União do Vegetal (1961); Gonzales v. O Centro Espírita (2006)
A ceremonial plant-medicine ritual using a psychoactive Amazonian brew, central to several Brazilian religious movements as well as Indigenous traditions.