Many people are convinced that coffee has a natural brother, this would be the Vit. C. The mix of coffee and Vit. C is indeed very good, it turns coffee in a decent developer, not so grainy and foggy.
Now, in a series of tests I undertook, I have found that Hidroquinone also is a good brother of coffee.
First of all, I prepared 10% solutions of coffee and hydroquine, the last one in a methanol solution. From each of them I prepared 250 ml bottles. Then I mixed 10% of the 10% sol. of hydroquinone with 90% of the 10% solution of coffee (in this solution I putted 0,5% sulfite for better conservation). I had then 50 ml of stock solution containing 1% of hydroquinone and 9% of coffee. To this stock solution I called Caffenol Q, Caffenol Hydroquinone.
Then I used a 5% solution of soda with 0,05% Potasssium Bromide as activator for the developer, using only 10ml/500ml to develop a Shangai 100 ISO film, during 1 hour at 20ºC, followed by normal wash and fixer baths.
Here is one of the photos:
Final note: very good negatives, good contrast and highlights, very little grain. Only one problem, I don't know if I live enough to use all that stuff. Maybe you can help me, besides I need to test other mixtures, Phenidone for instance.