The thing that I dislike the most around store-bought pesto, and other refrigerated foods for the matter, is the dimension of the container.

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More frequently than not a single container is an ext than I need for a solitary recipe. That pipeline me through a half-open jar sit in the refrigerator that I have to remember to use.

And in ~ a details point, the dreaded inquiry comes up: does pesto go bad?

If you’d favor to learn much more about the shelf life, storage, and going bad of pesto, this post is for you. In it, we cover both the store-bought and also the homemade variety. That method we’ve got you covered if you favor to make this sauce yourself.

Fresh pesto

How To keep Pesto

There space two kinds of pesto obtainable on the market. The very first one is marketed unrefrigerated, while the 2nd one sit in the refrigerated section of the store. The exact same thing walk for other sauces, prefer salsa.

Let’s start with the former. Unrefrigerated pesto typically comes in jars or tins. Due to the fact that it sits at room temperature at the store, you deserve to store in room temperature too, as lengthy as it’s unopened.

Make certain it’s in a cool and dry area, far from sunlight and heat sources. Part sunlight and also temperature transforms won’t make it go negative in the container, but the quality after opening could not be the great.

Once you open up the container, make certain it’s constantly sealed tightly and also sits in the fridge when not in use. If the pesto come in a tin, pour it right into a sealable container before refrigerating.

The 2nd variety of commercial pesto is the one that’s sold refrigerated. Storing that is not rocket science: the minute you acquire home v it, you put it right into the fridge and also keep that there.

Once you open the container, save it always sealed tightly. If the initial container isn’t sealable, to water the pesto right into a little food container.

When it concerns homemade pesto, you should constantly keep it in the fridge and also sealed tightly. If you intend to keep it in the refrigerator for a couple of days, include some olive oil top top top before chucking it into the refrigerator. That will help it retain top quality for a little bit longer.

Pesto in one airtight container

Can You frozen Pesto?

If friend would like to prolong pesto’s shelf life, you can freeze it.

Please note that freezing pesto might result in a slight adjust of structure after thawing. The top quality of this sauce after defrosting relies on the ingredients used to make the pesto and when it to be frozen.

Also, please remember the in some dishes the altered texture will certainly blend in well, when it rather it will certainly be noticeable.

In short, you must do some trial and error to number out if her pesto freezes well and how it functions in your favorite dishes.

When it involves how to freeze pesto, try freezing it in ice cube trays. This method you can quickly thaw as lot of the sauce as you need.

How long have the right to you keep pesto in the freezer, girlfriend ask? Buitoni recommends for 30 work only, but obviously, pesto in the freezer won’t spoil. Its top quality will degrade end time, though, therefore the sooner you use it, the better.

Making pesto mortar and pestle

How long Does Pesto Last

Once again, let’s begin with the shelf life of commercially packaged pesto marketed unrefrigerated.

It typically comes v a best-by day on the label. The sauce, as lengthy as you leaving it unopened, can conveniently last a couple of weeks or maybe even months after the date. Of course, that won’t critical in great quality as long as warm sauce, yet it’s not favor it will certainly go bad a day or two after the date on the label.

Once you open the seasoned or tin, you have the right to keep the sauce for around 7 to 10 days.

When it comes to the store-bought pesto offered in the refrigerated area, in most situations it has a use-by day on the label. The unopened sauce need to retain an excellent quality for perhaps up to 5 to 7 days previous that date. Occasionally it keeps fresh because that longer, however that’s not a given.

Once you open the container, girlfriend should complete it in ~ 5 come 7 days. The unrefrigerated pesto contains an ext preservatives the the refrigerated variety, therefore it likewise lasts because that a shorter period after opening the bottle.

Homemade pesto lasts because that 4 to 5 job in the fridge. Self-made pesto commonly doesn’t contain any preservatives, for this reason nothing is preventing it indigenous going bad, therefore the short period.

Of course, it would certainly be right if you would certainly take a mortar and a pestle and whip up new pesto because that every dish. But as us all know, it’s one unrealistic scenario.


If friend would favor to prepare a larger batch, examine out the freeze instructions earlier.

Pesto (sold unrefrigerated, unopened)Best-by + 1 – 3 months
Pesto (sold unrefrigerated, opened)7 come 10 days
Pesto (sold refrigerated, unopened)Use-by + 5 – 7 days
Pesto (sold refrigerated, opened)5 – 7 days
Pesto (homemade)4 – 5 days

Please note that the periods above are stormy estimates.

Fresh spaghetti with pesto and chicken

How to Tell If Pesto Is Bad

There are a few things to look out for when it involves spoiled pesto.

Of course, there are the normal suspects, like mold or any kind of other necessary growth. Look because that them ~ above both the surface ar of the sauce and also the inside of the container.

The second classic sign of spoilage is an turn off or rotten smell. If the sauce doesn’t smell fresh choose it generally does, it’s previous its prime, and also you should discard it.

Next in line room the basil leaves. If they’ve changed color from eco-friendly to brownish, it’s a good indicator that the pesto must be discarded.

Olive oil be separate (and quite dense) in pesto – common in homemade pesto after ~ a few hours the storage
If everything around the sauce seems okay, it have to be fine. Give a little amount a taste and decided based upon that if it’s an excellent enough come use. If not, discard it.

Last however not least, you re welcome remember the pesto spoils quickly. If you’re questioning if it’s okay to eat, it usually means it’s not. Trust her senses and also throw the sauce out if that’s the case.

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Same point if it sit in the fridge for an extended period, favor over a week because that homemade pesto. Even if everything seems to be okay v it, it’s better to stay on the safe side and also discard it. The an initial signs of that going bad are daunting to spot, so assuming it’s currently off is the right selection here.