Piperine

Piperine was the active ingredient in pepper. It was often used as an insecticide. The Tenth Doctor used this property of pepper in an attempt to uncover the identity of a Vespiform by lacing the soup in Eddison Manor with pepper. (TV: The Unicorn and the Wasp)
Category:Substances from the real world
Category:Pesticides
Category:Poisons from the real world