Koji Alchemy

Foundations of fermentation

An ode to an ingredient that’s quietly revolutionized kitchens around the world, Koji Alchemy is a project lover’s encyclopedia. Koji isn’t just a mold—it’s a powerhouse of flavor transformation, and authors Umansky and Shih make its magic approachable for cooks of all levels. With recipes, techniques, and plenty of inspiration, this book takes you deep into the alchemy of miso, amazake, shoyu, and beyond.