toffle over in the coffee developer group loves to use coffee to process his prints.
and joe v in the other thread mentioned that coffee developer might work well
as a developer for paper negatives.
after a long while i started to make paper negatives again. i am embarrassed to admit
that it has been as long as it has been, but i am starting again

i have recently bought a graflex 3A postcard format camera and a 5x7 sheet of paper fits in perfectly. i also have about 2 quarts of coffee developer from film processing that i saved
and never drained after processing maybe 6 or 7 rolls of film. this is developer i made not from
store bought instant, but home roasted sumatra robusta beans. like with all the coffee developer i use
i put a few cc of ansco 130 in the mix ( these days an average of 30cc / 750cc of coffee )
it works perfectly as a paper developer. just low contrast enough, and it doesn't take longer than about 3-4 minutes to developer to completion.