At the turn of the twentieth century, Boston was a booming candy town. Of all the tantalizing treats, nothing has stuck around like Marshmallow Fluff. Since that time, the small, family-run company Durkee-Mower has churned out a century of Fluff with the secretive air of Willy Wonka. Little has been made of this extraordinary legacy—until now. To author Mimi Graney, Fluff is more than a retro ingredient. It is a story about the merits and pitfalls of adaptation and innovation. Graney deftly brings the factory floor alive, weaving a fascinating narrative about New England’s forgotten candy industry, changing social roles for women, the advent of commercial radio and modern advertising, and the supermarket revolution. Fluff has survived two world wars, corporate attacks, nutrition battles, and the rise and fall of manufacturing towns. The world has changed around it, yet this icon remains the same.