AT FIRST GLANCE, koji spores are pretty unassuming, but the sandy, wheat-colored powder unleashes worlds of flavor. Koji is an edible fungus that is inoculated in steamed rice, and fuzzy, fresh rice koji is the foundation for making miso, sake, amazake, and shio koji, a delightfully versatile Japanese condiment. The enzymes in koji turn starch into sugar and protein into deep umami flavors. It can be used to tenderize meat, thicken sauces, and add sweet and salty depth to just about anything.
At Juniper and Ivy in San Diego, koji is never listed on the menu, but chef Anthony Wells uses it as a secret ingredient in a dozen different dishes, creating pumpkin gochujang for kampachi tostadas and whipping cashew miso with sweet potato to pipe into agnolotti. “It’s a…
