How Many Times Can You Actually Reheat Leftovers?

You Should Know: You likely grew up being told you could only reheat leftovers once. But is that really true? Well, food scientists have thoughts: they largely agree that multiple reheatings aren’t inherently dangerous, as long as you handle food correctly at every step. What actually matters is how long food spends in the temperature “danger zone,” which falls between 40°F and 140°F.

Going Deeper: Reheating kills most active bacteria, but it can’t touch the heat-resistant toxins some bacteria leave behind. Certain strains found in rice and meat-based dishes produce toxins that survive even a thorough reheat. And each time food cools back down after being heated, it re-enters that danger zone, which compounds the risk over time.

Takeaway: The smarter move is to portion out only what you’re actually eating rather than heating the whole container. Get leftovers into the fridge within two hours of cooking, and make sure they reach 165°F all the way through when you reheat. If something smells off or looks wrong, trust that instinct.

Bottom Line: Reheating food more than once won’t automatically make you sick, but it doesn’t remove all danger, either. But you’ll probably be fine if you handle it right.