Los Angeles is no stranger to culinary waves, but the city’s latest quiet obsession has its roots in Japan: shio-koji. Once an under-the-radar seasoning known mainly to chefs and home cooks in Tokyo, this fermented rice-and-salt marinade is now appearing across LA menus. From Shio-Koji Chicken featured on modern Japanese menus, to izakayas using it to season broths, and ramen shops experimenting with koji-based vegan dashi, this subtle, umami-rich ferment is quickly becoming the backbone of LA’s next flavor frontier. 

The movement isn’t just in fine dining. Social feeds from LA concepts have been buzzing with koji fried chicken and karaage, where the marinade works its magic to tenderize and add depth. Bento shops, too, are catching on, noting shio-koji marinades alongside familiar teriyaki or miso-based options. The result is an ingredient that feels both ancient and cutting-edge—deeply traditional, yet perfectly aligned with LA’s ongoing pursuit of clean flavors, plant-forward cooking, and fermentation-driven wellness.

Editors and food forecasters looking toward 2025 have already highlighted the rise of Japanese citrus—sudachi, yuzu, and their zesty cousins—as well as niche pantry staples like black sesame paste. Koji sits comfortably in the same chef-first lane: a quiet signal ingredient that chefs champion before it hits mainstream grocery shelves. The LA/Tokyo connection has never been stronger, and as chefs continue to blend tradition with innovation, shio-koji may just be the city’s next big (but quietly powerful) import.