Mordantaine

Mordantaine is a fictional substance that appears in the novel "The Eyre Affair" by Jasper Fforde. Within the novel's universe, it is a powerful, addictive drug derived from the ink of genetically engineered octopuses. The substance is highly sought after for its ability to induce vivid hallucinations and altered states of consciousness, often leading to temporary psychic abilities or heightened sensory perception. However, its use comes with severe drawbacks, including extreme withdrawal symptoms, paranoia, and a significant risk of psychosis.

The protagonist, Thursday Next, encounters mordantaine early in the novel as part of a criminal underworld plot. Its presence highlights the novel's unique blend of literary fantasy and science fiction elements. The drug is central to several plot points, influencing the actions of characters and driving the narrative forward. The fictional creation of mordantaine serves to establish the unusual technological and biological advancements present in Fforde's world, where genetic engineering and literary magic coexist. The dangers and allure of mordantaine are used to explore themes of addiction, escapism, and the consequences of tampering with nature.