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Shio Koji


Shio Koji is a simple ferment that is wonderful to have on hand. Use it in place of salt in sauces and dressings. It also makes a wonderful meat marinade.



  1. Mix Brown rice koji and salt together in a quart jar. Add water and cover with a coffee filter or cloth, secured with a rubber band.
  2. Set in a warm spot (72-80ºF) to culture for 7-10 days. 
  3. After 1-3 days, add more water to cover, as the dry koji rehydrates and swells. 
  4. When the water is cloudy and the koji smells pleasant and reminiscent of soy sauce, cover with a tight lid and refrigerate. 
  5. The koji will continue to age in the refrigerator, changing from a sharp, salty flavor to a mild, sweet flavor. 
  6. If the koji develops a thick, leather mold on the surface, lift it off and discard. The Shio Koji will store for 3 months or more in the refrigerator.



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