Final answer:
The requirement for cold holding TCS foods in a refrigerated display case is to keep the food at 41°F (5°C) or lower to prevent bacterial growth and ensure food safety.
Step-by-step explanation:
When cold holding TCS foods, such as those in a refrigerated display case, it's essential to maintain safe food storage temperatures to prevent bacterial growth. TCS foods should be kept at 41°F (5°C) or lower, as temperatures above this can promote the multiplication of microorganisms, leading to foodborne illnesses. Refrigeration and freezing are effective methods of microbial control because they inhibit microbial metabolism and growth. To assure food safety, especially during unforeseen circumstances like a power outage, a built-in or separate thermometer should be used to monitor the refrigeration temperatures continuously.
Contrary to the practice of rotating food items irregularly for variety or storing foods without covering for air circulation, food safety standards stipulate that proper temperature control is the paramount concern. Additionally, foods that are meant to be eaten cold must be kept at the correct refrigeration temperature until served, and perishable leftovers should be refrigerated promptly. Failure to meet these temperature requirements can render food unsafe for consumption if left in the temperature danger zone - between 40°F and 140°F - for more than two hours.