What is the optimum internal temperature for reheating leftovers?

The optimum internal temperature for reheating leftovers is 165°F (74°C) because this temperature effectively kills most bacteria and pathogens that can develop in food that has been stored. When leftovers are properly reheated to this temperature, it ensures that any harmful microorganisms that may have grown during storage are eliminated, significantly reducing the risk of foodborne illnesses.

Reaching this temperature helps to ensure not only safety but also quality, as foods that are reheated to this level are typically heated evenly throughout, making sure that cold spots, where bacteria can survive, are avoided. This standard is backed by food safety guidelines and regulations aimed at protecting consumers and promoting safe food handling practices in food establishments.