Tips for heating food quickly use a microwave, oven or stove top to rapidly reheat it to at least 60°C don't heat food using bain maries, pie warmers or other equipment designed only to hold food hot - this is likely to take too long or not heat the food enough to keep it safe

You can use any heating device to reheat food that can bring food to 165ºF (74ºC) for at least 15 seconds and within two hours. Avoid reheating food more than once to ensure optimal quality and safety. The bottom line Reheating food kills bacteria and pathogens that may be present.

Heating food destroys potentially harmful bacteria and other microorganisms, which makes food safe to eat and easier to digest. When food or liquids become hot, their molecules absorb energy, begin vibrating rapidly, and start to bounce off of each other.