How to find fermentation/miso/koji producers with overpass turbo

Help and support
1

Hello! I have been trying to find miso/koji producers in Japan and Europe, but I am not coming up with much. For Europe, nothing has come up, and for Japan, only two. This is the query that I am using:

[out:json][timeout:25];
// fetch area “japan” to search in
{{geocodeArea:japan}}->.searchArea;
// gather results
nwr["product"="miso"](area.searchArea);
// print results
out geom;
2

You can get an idea how often a particular tag is used from Taginfo:
https://taginfo.openstreetmap.org/keys/product

This shows only 3 uses of product=miso worldwide, so your results are not surprising - it is not specific to Overpass Turbo, it’s simply not a tag that is frequently mapped.

Assuming you already know where some producers are located, it might be worth looking at them on the map to see how they are tagged. Perhaps they have a more generic product tag such as product=food, or they might not have the product explicitly tagged at all.

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