Yellow Lotus Soup

Description
"He halted at an ebony door, in the center of which was a grinning silver skull, and pushed it open. He looked into a chamber of ebony and jet, and saw, on a black silken couch, a tall, spare form reclining. Yara the priest and sorcerer lay before him, his eyes open and dilated with the fumes of the yellow lotus, far-staring, as if fixed on gulfs and nighted abysses beyond human ken."

- The Tower of the Elephant

While the yellow lotus can make a mind forget its past, one may cook it into a soup and boil out this property. So prepared, it becomes a safe and rather mundane meal, despite the mystical mystique surrounding the flower.