[Sorry -- uploaded photos in reverse order.]
Okay, trying this one again.
I'm not really sure how many dishes I'm supposed to do, but I used 4.5 litres of water, which turns out to be 1.2 gallons, so I've lowballed myself a bit.
I think the link to the soap website's on the label, a photo of which I'm uploading. It's pure olive oil soap, anyway, which is detailed on the label.
The two rackfuls took 2 pitchers, and the extra dishes along the worksurface were done with the third.
Hoping it's enough!
-- Jojo
Note: The last attempt failed due to lack of a link and lack of a description of the soap, but I did describe the soap, and all the details are in the label I uploaded in the photo. Here's the link, but the site's in German, and all the information's already on the label:
https://www.finigrana.de/aleppo-seifen/traditionell-handgeschnitten/
The soap is literally olive oil and sodium hydroxide mixed with water to form sodium olivate and glycerin. It's Aleppo soap -- you can't get anything simpler. The reason it doesn't have 'greywater safe' on it is that it's the most basic soap there is. This version doesn't even have the laurel berry additive.