Can pesto go bad in the fridge?

In this brief article, we are going to answer the question “can pesto go bad in the fridge?” We will discuss how to store the pesto in the fridge. In the end, we will discuss how to know if the pesto turns bad. 

Can pesto go bad in the fridge?

Yes, pesto can go bad in the fridge. However, pesto should be refrigerated as soon as possible to increase its shelf life. If you want to protect your pesto from spoiling, put it in the fridge. 

If you purchase it from the market you should store it in the fridge after opening, however, if you prepare it at home then immediately store it in the fridge.   

Put it in an airtight container or a glass jar. Spread some olive oil on top before shutting the lid for further protection. The oil functions as a barrier, preventing microorganisms from invading your pesto.

It’s the same as it was when you first purchased it. They should be chilled if they are kept in the refrigerated section. To avoid exposure, transfer the remaining pesto to an airtight jar with a sealed cover as soon as possible after it has been opened. 

It will be fresh for 3 to 4 days in the fridge as the cold temperature will prevent it from spoiling.  

How to keep pesto in the fridge?

A close pack of pesto can also be stored in the refrigerator. Pesto must be kept refrigerated after opening, regardless of the variety. Keep the container well sealed, just as you would with other general food storage rules. 

If you want to prepare your pesto at home, store it in an airtight container and keep it refrigerated at all times. Fresh pesto should be kept refrigerated at all times. 

A container of pesto was already pasteurized or preservatives have been added. This pesto jar will keep for a long time if kept in a cold, dry location far from sun exposure, such as your fridge.

It is crucial to practice good hygiene in order to keep the food safe. To scoop the product, only use clean utensils. You don’t want any bacteria or pollutants to get into your pesto jar.

What is Pesto’s Shelf Life?

In most situations, pesto with an expiry date on the label is offered in the refrigerated section. The sauce should be fine for another 5 to 7 days if it hasn’t been opened. It may last longer in some cases.

You have to finish it within a week once you open it. Because unrefrigerated pesto includes more preservatives than refrigerated pesto, it lasts longer after being opened. Pesto can be kept in the fridge for 3 to 4 days.

The storage period of unrefrigerated packaged pesto is normally the best-by date. If you store the package unopened, it may last for up to a few weeks. 

Of course, it won’t survive as long as a spicy sauce in terms of quality, but it’s not like it’ll spoil a day or two beyond the expiration date. You should use pesto for one week after opening.

Usually, homemade pesto contains no preservatives, nothing can prevent it from spoiling, as a result, it will have a short shelf life. Naturally, it would be perfect if you make fresh pesto every time.

How to Know If Pesto turns Bad?

Rotten Pesto has some red flags to look for. There are, of course, obvious suspects, such as mold or any other bacterial development. They should be found on the sauce’s surface as well as the container’s interior. 

Rotten odor is the second symptom of pesto turning bad. If the sauce doesn’t smell as fresh as it typically does, it’s past its sell-by date and should be thrown out. 

The pesto must be thrown if the color has transformed from green to brown. It should be OK if everything regarding the sauce appears to be in order. 

Taste a tiny bit and decide if it’s healthy enough to use based on your choice. If it isn’t, throw it out. 

Lastly, keep in mind that pesto goes bad rapidly. If you’re not sure if something is safe to eat, it probably isn’t. If that’s the case, trust your instincts and throw the sauce out. 

If you keep it in the refrigerator for a long period of time, it will turn bad if the pesto is homemade. 

Even if everything appears to be in order, it’s preferable to be safe and throw it away. Because the early indicators of it failing are difficult to detect, it’s best to assume it’s already broken.

Other FAQs about Sauces that you may be interested in.

Are hoisin and oyster sauce the same?

Can applesauce go bad in the fridge?

Can dogs eat soy sauce?

Can I freeze pesto


In this brief article, we answered the question “can pesto go bad in the fridge?” We discussed how to store the pesto in the fridge. In the end, we discussed how to know if the pesto turns bad.