Just when you learn to love something, they stop making it.

[removed account4]

It appears that the ascorbic acid is superadditive with whatever it is in the coffee that is also a developing agent.
Nb I say appears, and nb nobody really knows what the developing agent(s) is(are) in coffee ... Though caffeic acid is a current favourite candidate.
It is possible to develop flim in coffee (+ alkali) alone, but the developing times seem very long and the results very low contrast

a long time contributer to apug mentioned in a thread several years ago
that he uses coffee with nothing added, no alkali, nothing but coffee ...
and he is always pleased with the results from his development.
if i can, i'll try to dig up the thread and read it again, but it might be so burried
that it is impossible to find ...

found it --
(there was a url link here which no longer exists)

 

[pdeeh]

Ha!
Wonder if it would be a way of taming lith film?

 

[pdeeh]

I bet it's because Jay deFehr always calls it a staining developer.
Why I have no idea. It doesn't give me either image stain or overall stain