How to know if pizza is spoiled

In this brief article, we will discuss how to know if pizza is spoiled or not. In this article, we will also tell the shelf life of pizza and how to store it properly. 

How to know if pizza is spoiled

You can tell if pizza is spoiled by looking for molds on the surface along with a foul odor. Vegetables as toppings on pizza also become slimy if pizza is spoiled, giving off a very bad smell.

If you ordered pizza then it can stay fresh for around 5 to 6 hours after it has gone cold. It is better to eat pizza while it is still hot. If you decide to put it in the fridge then you can leave it overnight to eat leftover pizza the next day. 

Storing pizza in the fridge

If you decide to keep the pizza slices inside the fridge, make sure that you cover them in aluminium foil or a plastic wrap and then put them in an air-tight container. This will ensure that no bacterial mold grows on the pizza. Pizza will also remain fresh for a longer time.

Don’t make the mistake of leaving pizza outside at room temperature overnight because that will definitely lead to a very gross pizza in the morning. You can very easily tell when a pizza is spoiled by looking for the following signs 

  1. Organic growth on the slice

If you see any molds growing on the edges which you can remove to save the rest of the pizza, then do it as soon as possible. However, if you see any of the changes mentioned below along with the mol then throw the pizza away.

  1. A foul smell

Pizza has a lot of topping over it which becomes moldy as soon as it is spoiled. This is why they start to smell extremely bad and you can even see those vegetables changing color.

  1. A bad taste

With molds growing on the top of your pizza, what else can you expect than a very bad and foul taste which will instantly tell you that the bread is not good. The bread crust starts to taste moldy. 

  1. Dry crust

A dry crust means that your pizza is way past its due date and throwing it out is a personal choice that you have to make. More importantly, you should check the crust for any mold or foul smell that might be more than just old pizza.  

  1. Slimy toppings

Pizza has a lot of toppings which includes mushrooms and vegetables as well. These can easily go bad if pizza is not stored properly. That’s why toppings can go slimy if the pizza is spoiled. 

Leftover pizza? What to do next

We have all had parties which ended with a lot of leftover pizza that went into the fridge. Fridge might not always be able to store your pizza as the fridge door opens and closes which means a fluctuating temperature. 

Freeze it!

Freezing leftover pizza is very simple and will keep the leftover pizza fresh as new when you toss it in the oven. You need aluminium foil and some freezer bags. Place the slices in aluminium foil and then put it in the freezer. 

How to freeze pizza properly

To be extra careful, place the aluminium foil pizza slices inside an air-tight bag which will prevent them from getting any mold. Now these pizza slices can stay in the freezer for a couple of months. 

To thaw frozen pizza, you can leave it in the fridge for 3 days and then heat it in the microwave. Make sure to eat it immediately because if you leave it even for a couple of hours after heating it, the pizza will turn dry, hard and very difficult to chew as well. 

What happens if you eat spoiled pizza

Pizza has a lot of toppings which go bad when the pizza is spoiled. Harmful germs and bacteria such as Salmonella find their way to your pizza slice and can seriously harm you. This can lead to nausea, vomiting and the stomach ache won’t let you sleep at night. 

If it goes bad, you might even get food poisoning, vomiting and diarrhea for days which is a painfully slow healing process leaving you feeling lazy and weak. This is why you should be extra careful when eating food which has toppings or dairy products on it. 

Other FAQs about Pizza that you may be interested in.

Can I eat pizza with the flu? 

Is cold pizza good for breakfast?

Is cold pizza OK to eat?


In this brief article, we discussed how to know if pizza is spoiled or not. In this article, we also told the shelf life of pizza and how to store it properly.