Soy sauce is the potently flavored liquid condiment that we know, love, and use extensively in restaurants and home kitchens.

For most of history, soy sauce was made at home, or at local grocers and co-ops, much like how most European towns and villages had their own small-scale breweries and bakeries. But in a parallel with ...

Fukuoka Prefecture has over 100 soy sauce breweries. The basic production process is the same everywhere. Most soy sauce is made from four basic ingredients: soybeans, wheat, salt and water.