potato dextrose broth?

[RandBio]

Randolph Biomedical is a speciality culture media manufacturer.  They
prepare small lots of Hard To Find preparation or media formulas
referenced in reprints but not commercially available.  They also will
make custom formulations.  They can be reached at 401-826-1407 (USA) or
e-mail  randbio at aol.com    This is not intended to be a commerical use of
this newsgroup - but an effort to let you know of a source.    RR