I do not know if it is The answer but fin an answer here : http://caffenol.blogspot.com/2010/06...velopment.html
some people say the coffee has very little to do with it, and it is just the vit c that does the developing ...
i don't believe'em !
with coffee alone just let it stand for a few hours,
it works very well, some say better than everything else ...
stand and semi stand and caf-c yields some very good results as well ...
Just look up Reinholds blog and be astounded!
perhaps you should experiment a bit more before coming to your conclusions.
Coffee developers came to be as part of a RIT experiment
Then in 2003-2004 some brought them to PhotoNet. There Roland Simmons, Donald Qualls, Lex Jenkins,myself and a few others carried out tons of experiments
There was someone else very important, Patrick C Gainer who introduced us to adding vitamin C to Rodinal, and then we tried it back on caffenol
credit to whom credit is due....