Uncover the dark and mysterious history of the "flying ointment" in The Devil's Ointment. Renowned herbalist Corinne Boyer examines the notorious magical salves of European witchcraft—once said to be compounded from toxic herbs and human fat to grant the power of nocturnal flight. Moving beyond speculative legend, Boyer explores these unguents through the lenses of plant lore, folk magic, and traditional medicine. This deeply researched work places the witches' salve within the broader context of the European pharmacopoeia, revealing how therapeutic folk medicine and occult practices intersected. From the frenzied Sabbats of lore to modern pharmacological theories, this book is an essential investigation into one of history's most enduring occult mysteries.