Thanks you for the link to the book !
(you say you worked on another direction, what was this ? it did not suit your expectations ? Tell us more !!)
I am really interested in your method, could you share with us those "simple compononents and how to proceed" ?
Do you use only the green coffee beans ? or do you prepare the whole recept n°1 ?
So could we replace the green coffee by just some citric acid ? did you try it ?
(BTW, I did not find citric acid in stores.... ... so I wondered : could I simply use fresh lemon pressed juice ?)
What is the use of the "nitrate of potash" in this recept ?