In 18th century France, the potato was not a valuable food but a despised root, a roadblock to agricultural development. Army pharmacist Antoine Augustin Parmentier, however, made a crucial discovery during wartime; he learned firsthand the potato was highly nutritious. He saw a massive opportunity for national growth and made it his mission to convince a skeptical public, an enterprise that would require immense creativity. His initial strategy was a masterclass in marketing, targeting society'