The Way You're Storing Leftover Pizza Is Actually Dangerous (2024)

Let's talk about the temperature danger zone.

By Gabby Romero
The Way You're Storing Leftover Pizza Is Actually Dangerous (1)

As fun as it is to have a pizza party, it always ends with the same dilemma: figuring out where to store the leftovers. Finding enough room to fit a pizza box is a near impossible task. So if you’ve ever given up and kept your leftover pizza on your kitchen counter, you’re not alone.

Health officials often warn against storing food at room temperature for prolonged periods of time because of the risk of food-borne illness. But there are many foods that can hang out at room temperature without harboring germs.

Bread and tomatoes, for example, shouldn’t be refrigerated anyway—and that’s two thirds of a pizza, right? So can we get away with keeping our pizza on the counter and spare ourselves from playing a game of refrigerator Tetris?

We’re breaking down everything you need to know about storing pizza and whether your pie can stay at room temperature.

Is It Safe To Leave Leftover Pizza Out?

The Way You're Storing Leftover Pizza Is Actually Dangerous (3)

Sorry to break the news, but pizza should absolutely not be stored at room temperature overnight. In fact, it shouldn’t even spend more than a few hours on the counter. The temperature range of 40-140°F is widely known as the temperature danger zone—a.k.a. the climate where bacteria can thrive.

The USDA reports that bacteria can start taking over your leftovers in as little as 20 minutes. And after two hours, it's deemed unsafe to eat left-out pizza at all. In mild to moderate cases, getting food-borne illnesses from room temperature food means stomach pain, diarrhea, vomiting, and fever. But more serious cases involve hospitalization and even death, like this 2008 case involving leftover pasta.

There are certain ingredients that have a much higher risk factor when it comes to bacteria growth, and it mostly comes down to the level of moisture and protein present. Baked goods like bread, cakes, and cookies all have relatively low protein and moisture levels (and are often preserved with plenty of fat and sugar), which means they can safely sit out on the counter for a few days.

Pizza, on the other hand, has plenty of protein and moisture that can invite harmful bacteria. The dough itself doesn’t present much danger, but the sauce, cheese, and toppings definitely do. Cheese, alongside milk and other dairy-based products, is one of the most at-risk ingredients. The FDA notes that the high levels of protein and moisture in cheese make it especially vulnerable for bacterial growth.

The same goes for the sauce and certain toppings. Cooked vegetables (like peppers. mushrooms, and tomato-based pizza sauces) contain a lot of natural liquid which can cause bacteria like Salmonella and E. coli to grow.

How To Properly Store Leftover Pizza

The Way You're Storing Leftover Pizza Is Actually Dangerous (5)

Just because you can’t keep your pizza box on the counter overnight doesn’t mean you need to show the entire thing into your refrigerator. Actually, it’s recommended that you take your slices out of the box before storing them.

The climate of your fridge, aside from being cold, is also really humid. So, if stored in an open container like a pizza box, your slices will gradually absorb some of the ambient moisture. Not only does that make your crust sad and soggy, it also infuses your leftovers with whatever other smells are floating around in the fridge. Yuck!

So your safest bet for storing pizza is transferring your slices into an airtight container or resealable plastic bag. Make sure to label your container with the day you first ate it, then keep it in the refrigerator for no longer than four days. And, according to the USDA, you can pop your leftovers in the freezer and they’ll stay good for up to two months.

The Way You're Storing Leftover Pizza Is Actually Dangerous (7)

Gabby Romero

Associate Editor

Expertise: TikTok Trends, Drinks, Pop Culture

Education: B.A. in Journalism and B.S. in Communications from NYU, Culinary Arts degree from The Institute of Culinary Education

About Me: As an associate editor at Delish, Gabby works on everything from features to recipes to content on our social media channels. Before joining the team, she wrote for StarChefs Rising Stars Magazine, Mashed, and Food52. When she’s not developing co*cktail recipes, she’s making co*cktail-inspired dishes like Dirty Martini Pasta and Aperol Spritz Trifle. Her features cover online trends like the Millennial Shopping Cart, rank everything from hard seltzers to frozen French fries, and answer some of your most pressing food safety questions. You can also find her posting content on Delish’s TikTok, including her about cooking like influencer Nara Smith that garnered over 3M combined views. She loves eating spicy food, collecting cookbooks, and adding a mountain of Parmesan to any dish she can.

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The Way You're Storing Leftover Pizza Is Actually Dangerous (2024)

FAQs

The Way You're Storing Leftover Pizza Is Actually Dangerous? ›

Sorry to break the news, but pizza should absolutely not be stored at room temperature overnight. In fact, it shouldn't even spend more than a few hours on the counter. The temperature range of 40-140°F is widely known as the temperature danger zone—a.k.a. the climate where bacteria can thrive.

How to safely store leftover pizza? ›

So your safest bet for storing pizza is transferring your slices into an airtight container or resealable plastic bag. Make sure to label your container with the day you first ate it, then keep it in the refrigerator for no longer than four days.

Is it safe to eat pizza left out overnight? ›

The USDA reports that bacteria can start taking over your leftovers in as little as 20 minutes. And after two hours, it's deemed unsafe to eat left-out pizza at all. In mild to moderate cases, getting food-borne illnesses from room temperature food means stomach pain, diarrhea, vomiting, and fever.

How long does it take for leftover pizza to go bad in the fridge? ›

In general, she says all cooked foods and leftovers can be kept in the fridge for no more than three or four days. After that, they could start to spoil and contain bacteria. Jeremy White, editor-in-chief of Pizza Today, shares the same sentiments as Carothers. In fact, he says four days could be pushing it.

How safe is it to eat leftover pizza? ›

The USDA's food safety guidelines state that leftover pizza will last in the refrigerator for up to four days — provided the two-hour rule was followed beforehand. To properly refrigerate your leftover pizza, wrap it tightly in foil or plastic wrap or store it in an airtight container.

Is it better to put pizza in the fridge or leave it out? ›

So, if it sat out overnight, toss that pizza in the trash or compost bin, and spare yourself the risk of foodborne illness. Better yet, refrigerate the leftovers within two hours and you can reheat them the next day (or eat cold pizza if that's your style).

Can I eat 5 day old pizza? ›

According to the USDA, if the pizza has been refrigerated at a temperature below 40 degrees, its only safe to eat for up to 4 days. The USDA says that after 4 days, you run the risk of getting a food-borne illness, such as Salmonella, norovirus, or other diseases with horrifying Latin names.

Is it safe to eat food left out for 4 hours? ›

Bacteria thrive in temperatures between 40 and 140 degrees and can double every 20 minutes in that “danger zone.” Based on that growth, scientists pinpointed two hours to be the maximum amount of time consumers can safely leave perishable food at room temperature.

Can you still eat a frozen pizza if it thawed? ›

You can cook and eat thawed but still cold food mixtures like casseroles, pot pies, frozen dinners or pizzas but do not refreeze them. Learn how to keep food safe during a power outage.

How to tell if pizza is bad? ›

As pizza starts to near the end of its life, it begins to look dry and unappealing. It may even start to smell and have visible mold. In both cases, this leftover pizza should not come near your pie hole.

Is it okay to eat cold pizza from the fridge? ›

In short, if you're craving a piece of cold pizza, just make sure you're grabbing it from the fridge or freezer — not your kitchen counter or the end table in your hotel room. Your taste buds, and stomach, will thank you later.

Can you eat a frozen pizza that has been in the fridge? ›

Thawed frozen pizza is safe if kept in the fridge for up to 2 days. Check for bad odors, mold, or odd textures to ensure it hasn't spoiled.

Can I freeze leftover pizza? ›

To freeze your pizza, you can toss your slices into a plastic bag, pack them into a reusable, freezer-safe container, or even wrap each piece up individually. Whenever you're ready to grab a slice, simply thaw one out and reheat it.

How to store pizza overnight? ›

Stack and wrap

Keep stacking, alternating pizza and paper until all the slices are on the plate. Wrap the whole thing tightly in plastic wrap and place it in the refrigerator. That's it! It's not as easy as just throwing the box in the fridge, but you'll end up with tastier leftover pizza to reheat.

Is it safe to reheat pizza? ›

It's safe to reheat pizza the next day, as long as you're heating to a temperature that would kill any bacteria off. An oven, air fryer, frying pan, and microwave are all viable options, but some methods work better than others. So don't just whack your pizza in there and hope for the best!

How do you bring leftover pizza back to life? ›

Heat up your oven

If you're reheating multiple slices of leftover pizza, warming them up in the oven is the way to go. Think about when you've picked up pizza from a slice shop — usually they'll reheat the slices in their own wood-fired or brick oven, which you can also do at home.

Can I put warm pizza in the fridge? ›

The Bottom Line

It is OK to store hot foods in the fridge. You do not have to wait for the foods to cool before you put them away. In fact, it's better to store them right away while they're still hot than to forget them and leave them sitting at room temperature for too long.

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