Editor's note: If you're wondering what "PHF/TCS" stands for in the chart above, the F371 guidance notes: "Although almost any food can be contaminated, certain foods are considered more hazardous than others and are called 'potentially hazardous foods (PHF) or Time/Temperature Controlled for Safety (TCS)' food." Source: State Operations Manual, Appendix PP www.cms.gov/manuals/downloads/som107ap_pp_guidelines_ltcf.pdf .