Nukazuke
Japan. Region and substrate as published. No source consulted here states its fermentation parameters.
Parameters
None of the sources this site reads states a salt percentage, a temperature, a duration or a terminal pH for Nukazuke. That is a gap in the published record rather than a gap in this page, and it is not filled in from anywhere else.
Why this is here
Nukazuke (糠漬け) is a type of traditional Japanese preserved food, made by fermenting vegetables in rice bran (nuka), developed in the 17th century.
English Wikipedia, Nukazuke, CC BY-SA 4.0.
Same region
Fields on this page come from Wikipedia. Nothing here is inferred from one field to fill another. What each dataset is, and what it is not allowed to supply, is on methodology.
Name, region and substrate partly from English Wikipedia (CC BY-SA 4.0) and Wikidata (CC0). Neither supplies a number on this site.