I use paper developer with long expired films with known high base fog. Generous (over)exposure and 2-2:30mins in paper developer, usually Orwo N113.
Originally Posted by johnielvis
The grain and contrast will be higher than with film developers, tho it is not the problem with 120 and up formats.
Dec 1965 expired 120 Perutz P17, shot at EI25, developed in paper developer. Rodinal gives me only mush with high fog with this film.