A 55 year old HIV positive male develops a fever and labored breathing.  The patient had not been compliant with his anti-retroviral regimens and had not been taking any prophylactic antibiotics.   Upon admission to the hospital he was found to have a CD4 count of 80.  A CT is performed which reveals multiple lung abscesses.  The patient was taken to surgery and had an accessible abscess drained and sent to the lab for testing.  The following organisms were seen on Gram stain and described as “branching, beaded Gram positive rods”.  Based on this finding and the organism it most likely represents, what piece of media would you add to your culture to optimize growth of this organism?