Do you have to wait for pizza to cool down before putting it in the fridge?
U.S. food and health agencies say it's a myth that hot food shouldn't go in the refrigerator. Should you wait for your food to reach room temperature before putting it into a refrigerator?
Myth: You shouldn't put hot foods in the refrigerator.
Fact: Hot food can be placed in the refrigerator. Large amounts of food should be divided into small portions and put in shallow containers for quicker cooling in the refrigerator.
Pizza leftovers need to be refrigerated within 2 hours of receiving it (or preparing it, if homemade) for it to be safe to reheat.
Prevent those painful moments and keep your pizza intact by allowing it to cool for a few minutes after coming out of the oven. This will also allow the cheese to set, preventing it from sliding off your slice as soon as you cut it.
Harmful bacteria can grow in food that is not chilled down as quickly as possible. SAFETY POINT WHY? If you have cooked food that you will not serve immediately, chill it down as quickly as possible and then put it in the fridge. Harmful bacteria can grow in food that is left to chill slowly.
Additionally, when you put something warm or hot inside your fridge, the clashing temperatures will create condensation. This might settle on the back wall of your fridge and become ice, which can, in turn, freeze any food items touching the wall.
Say goodbye to soggy cold slices
To make leftover pizza taste almost as good as it did when the pie was fresh, you'll need to reheat it.
The best way is to stack and wrap: Place a single layer of slices on a dinner plate, top with a layer of wax, freezer, foil or parchment paper. Keep stacking, alternating pizza and paper, until all the pizza's on the plate. Wrap the whole thing tightly up in plastic wrap, and place it in the refrigerator. That's it!
What's the best amount of time to wait? Dogtown Pizza recommends letting the pizza pie cool for about two minutes before slicing. When it comes to cutting the pizza into slices, Dogtown also states that a pizza cutter is best, but a knife will do just fine.
If something has been sitting out for over two hours, you should immediately discard it, especially any food that contains meat or cheese. Pizza contains both in most cases, making it more important to get the pizza in the fridge before you put that next movie on television or fall asleep.
Should you let pizza sit after cooking?
I would highly recommend waiting a few minutes before you actually pick up the slice and eat it, for fear of burning the roof of your mouth. Because we've all done that before. But once it's out of the oven, let it sit a few seconds and then cut right through it."
Dangerous bacterial growth occurs between 41 and 135 degrees F. This spectrum is known as the danger zone for foods. Potentially harmful bacteria grows most rapidly at these temperatures. Placing large batches of hot foods in the fridge can raise the temperature of the fridge into this danger zone.

Approved methods to cool food
Ice paddles (plastic container filled with water and frozen) used to stir food in an ice-water bath. Adding ice as an ingredient (if water is an ingredient). Blast or tumble chiller.
An ice water bath is simply a pan, or sink, of ice and water that you can sit the container in. Stir the food so that it cools even quicker. Food should be cooled and ready to go into the refrigerator or freezer within two hours from the time that you took it off of the stove or out of the oven.
keep chilled food out of the fridge for the shortest time possible during preparation. cool cooked food quickly at room temperature and place in the fridge within one to two hours.
Transfer the pizza to a cooling rack and let cool slightly, just until you're able to handle it. Transfer to a cutting board, slice into pieces, and serve.
“Aromatics such as garlic, onion and herbs along with cheese infuse brilliantly over a period of time and release their flavour. And if you put your pizza in the fridge, the combination of aromatics and cheese gets time to calm down, making the pizza even better,” he adds.
The Cold Pizza Argument
According to those who root for cold pizza, the time your precious pizza slice spends in the fridge allows its flavors and aromas to develop overnight. It's almost as if you were marinating the pizza in the fridge. Others say that they enjoy the cold cheese texture.
Cover with plastic wrap and freeze
To avoid freezer burn, double wrap the prepared pizzas. You can do two layers of plastic wrap or one layer of plastic wrap and one layer of foil. Lay pizzas flat in the freezer and store for up to 2 months. When you're ready to bake, preheat oven to 500 degrees F.
It's best to throw the pizza away if you realize that you have left it out overnight. However, if you have leftover slices waiting for you in the fridge or freezer, you're in luck. Reheating cold pizza is simple, takes just a few minutes, and is perfectly safe.
How long can cold pizza sit in the fridge?
To store any leftover pizza in the fridge, they should be tightly wrapped in plastic wrap or aluminum foil on a plate or transferred to an airtight container. According to the USDA's food safety guide, leftover pizza will last in the fridge for up to 4 days if correctly refrigerated within the 2-hour time frame.
In brief, eating pizza that was left out through the night is a bad idea. The USDA recommends throwing away any perishable food (including leftover pizza) that has stayed more than 2 hours under room temperature. Eating pizza that was left out overnight can cause foodborne diseases.
She claims that the crust stays crispy and the higher temperature keeps the grease from congealing—and that keeping it out saves the step of reheating your pizza.
Stack and wrap
Place a single layer of slices on a dinner plate, top with a layer of wax, freezer, foil, or parchment paper. Keep stacking, alternating pizza and paper, until all the slices are on the plate. Wrap the whole thing tightly up in plastic wrap and place it in the refrigerator. That's it!
It may be common to leave the pizza on the counter overnight, but that doesn't mean it's safe. Change the way you store your pizza from here on out, and you will reduce the risk of foodborne illnesses. Remember that pizza needs to be refrigerated after just two hours of sitting out.