What started as an 'alternative' process (I was a D-96 devotee) Caffenol has become the only way I develop film that I want to be monochrome. Here's the recipe that I've been using for a long while. It rarely changes, but my dev times do.

Makes 1 Litre

• 54 Grams washing soda
• 16 Grams vitamin C powder
• 40 Grams cheap instant coffee
• Base processing time is 15 minutes, with 10 – 15 seconds of agitation each minute. Depending on the stock, and desired outcome, dev time could be as little as 10 minutes.

More experimentation is on the horizon, with salt as a fixer, and maybe more exploration into peroxide reversal bleach

Caffenol has also worked well for me in cross processing colour, and C41 B&W stocks.