Participants in a program at Urban Adamah, where Shefa's cannabis retreat will be held. (Photo/Courtesy Urban Adamah) News Bay Area Zac Kamenetz, the psychedelic rebbe of Berkeley, seeks applicants for Jewish cannabis retreat David A.M. Wilensky | July 1, 2022 A few years ago, Rabbi Zac Kamenetz of Berkeley was a novice to psychedelic substances. But after a life-changing experience as a subject in a Johns Hopkins study of psychedelic experiences in clergy, he’s now a leading voice in a growing movement to normalize the use of psychedelic substances such as psilocybin (aka magic mushrooms) in the practice of Jewish...