What internal temperature must all leftovers and commercially prepared pre-cooked foods reach when being reheated?

Answer

$165^{\circ}\text{F}$ ($74^{\circ}\text{C}$)

All leftovers and pre-cooked foods must be reheated thoroughly to an internal temperature of $165^{\circ}\text{F}$ ($74^{\circ}\text{C}$). This is especially important for microwaved food, which should be stirred and checked to eliminate cold spots.

What internal temperature must all leftovers and commercially prepared pre-cooked foods reach when being reheated?
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