Shio koji is a three-ingredient Japanese fermented seasoning that tenderizes proteins, boosts umami, and works as a lower-sodium salt substitute. This practical guide covers what it is, how to use it five different ways, common beginner mistakes, health benefits, and where to find it.

Discover five essential Japanese fermented foods, from miso and shio koji to natto and tsukemono, with practical cooking tips and guidance on where to buy them in the US.

Japanese fermented foods like miso, natto, and tsukemono are rapidly gaining popularity in American kitchens, driven by growing interest in gut health and probiotics. Discover what makes these centuries-old foods so special and how to start enjoying them at home.