Tomorrow I get to do something fun: I get to lick the science!
My last bottle of DD-X developer expired (quite spectacularly, I had to get a hacksaw to open it and add it to the disposal container), but I've got ONE roll of film left to process.
Instant coffee
Ascorbic acid powder (vitamin C)
Washing soda (sodium carbonate)
Two of those, are lickable. That's the delta recipe for #caffenol, although I'm using it for HP5+ not Delta, it's still effective. I could've gone with Caffenol-C-H instead but that needs potassium bromide which can't be delivered as quickly and I'm not a patient person (hah!)