caption: Slide 2 of 21: Technically, most food can be safely reheated multiple times as long as its interior temperature gets hot enough to kill bacteria, but the more times you reheat something, the greater the chance of it not being properly heated all the way through. Unless you consistently use a food thermometer while cooking, it's best to err on the side of caution and not reheat leftovers that have already been reheated once.