>>3989509I find Caffenol C-L really good for fast/pushed films. I use this recipe here
https://shakyphotographer.blogspot.com/2017/03/my-best-caffenol-c-l-recipe-so-far.htmlI've developed a roll of TMAX 3200 (shot at 1600-6400) and the shadow detail was good and the grain not too harsh. I've developed HP5 and TMAX 400 pushed to 1600 and the results are high contast but still good.
I don't do proper stand development, though. I do agitations at 1, 2, 4, 8, 10, 10, etc minutes until it's done. About 40 minutes is enough for 1600 EI film.
Pic is TMAX. I've toned down the sky a bit in post but otherwise unedited. I'm not sure why the top half is less sharp than the bottom. Maybe I scanned it badly.