WHAT IS CAFFENOL?
Caffenol is an alternative to traditional chemical film development that uses caffeic acid (usually coffee or tea) and a pH modifier. There are many recipes available online, some of which also include Vitamin C.
According to the Wikipedia, this method of developing photographic film using standard household items was discovered by the Rochester Institute of Technology in 1995. And while instant coffee appears to be the most popular primary ingredient, you can also find home development recipes that use beer, red wine and various food items as the primary ingredient.
Commercially available Caffenol products frequently contain instant coffee and washing powder, along with Vitamin C and other ingredients.
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