No, this is not a joke. In one of the most disturbing emails released by the anti-secrecy group WikiLeaks, Clinton campaign chair John Podesta was invited by his brother to attend a cultist “Spirit Cooking Dinner,” which calls for sperm, blood, urine and breast milk. The spirit cooking dinner, an occult ritual founded by Satanist Aleister Crowley, was being put on by artist Marina Abramovic, who is known for her often-gory “art” that features pain and ritual.

In an email dated June 28, 2015, Abramovic wrote to Podesta’s brother Tony, who then forwarded it over to his brother, Clinton’s campaign chairman.

“I am so looking forward to the Spirit Cooking dinner at my place. Do you think you will be able to let me know if your brother is joining? All my love, Marina.”

Tony Podesta then forwarded the email to his brother John Podesta (Hillary Clinton’s campaign chairman), asking him, “Are you in NYC Thursday July 9 Marina wants you to come to dinner.”

Spirit cooking refers to “a sacrament in the religion of Thelema which was founded by Aleister Crowley,” according to Everipedia, and involves an occult performance during which menstrual blood, breast milk, urine and sperm are used to create a “painting”.

Abramovic is known for her first performance when she repeatedly stabbed herself in her hands. In her next performance, she threw her finger nails, toenails and hair into a flaming five-point star before eventually jumping inside of, which caused her to lose consciousness.