Found one old bag of marshmallows that’s pass its best-by date? That’s once you wonder: perform marshmallows go bad?

Or probably your bag sits open up for a few days, and also you’re not sure exactly how long marshmallows are good for.

You are watching: Are expired marshmallows safe to eat

Or how to store them so that they don’t acquire sticky.

That’s what this post is all about: storage, going bad, and also shelf life the marshmallows.

Interested? check out on.

Pack the marshmallows

How long Do Marshmallows Last

Marshmallows (unopened)Best-by + 1-2 monthsBest-by + 6+ months
Marshmallows (opened)1 week3+ months
Please keep in mind that the periods over are only estimates.Marshmallows come v a shelf life of 2 to also 6 months, noted by the best-by or best before date top top the label, and also usually save for at the very least 1 come 2 extra months. When you open up the bag, the street candies retain quality for about a week.

Those room the general guidelines. Let’s discuss the details.

Shelf Life that Marshmallows

The shelf life of marshmallows depends heavily on the producer and also the ingredient they space using.

Marshmallows from small bakeries are regularly made preservative-free, thus the short shelf life that 2 to 3 months.

Those mass-produced marshmallows girlfriend can uncover in the supermarket usually have a pair of extra ingredients to aid the liquid retain quality for longer. That’s why lock come through a longer one.

Pretty much all marshmallows conveniently last for a month or 2 after the date on the brand (which isn’t one expiration date). Those v preservatives, understandably, retain quality for longer, much more like 4 come 5 months.

Marshmallows day on label

Open Package

Once you open the package, the sooner friend eat the marshmallows, the better.

While part producers urge you to complete the bag in ~ 3 days, the candies need to taste great and no harden because that at the very least a week. Sometimes even two weeks.

As time walk by, marshmallows will normally harden and also lose their quality. So also though they might be for sure to eat ~ being opened up for a month, they most likely won’t taste nearly as great as they used to.


If you have to store this candies for longer than 2 weeks, it’s probably much better to freeze them (more on that later).

Marshmallows in warm chocolate

How to Tell If Marshmallows space Bad?

Marshmallows don’t go poor in the means dairy does, but they don’t critical forever either. Below are some of the things that could go wrong.

Pantry Bugs

Candies that all varieties attract a organize of pantry bugs, an especially ants.

If your bag that marshmallows sits in storage because that months, inspect the bag that the candy first. Make certain that it’s completely sealed and free from holes brought about by insects. And also that the aren’t any type of dead (or alive) pantry pests inside.

If girlfriend find any kind of insects, litter the liquid out, and check various other food assets nearby. Those things spread like wildfire.

Sticky Marshmallows

Marshmallows that have actually access to moisture (i.e., room stored in a humid place) will clump together and become sticky.

The adjust in structure doesn’t average that the marshmallows space no much longer safe come eat. They simply turn goopy due to melted sugars.

Unfortunately, the quality drop is nice significant, and I recommend you litter these out. There’s no point in eating candy that tastes bad.

If sticky and melting marshmallows is an problem you’re handling often, make sure to review the storage section.

Marshmallows closeup

Other top quality Issues

A freshly opened bag of marshmallows has a sweet yet mild aroma, pillowy-soft texture, and also sugary taste. That’s the right you’re after.

If the marshmallows are an especially old or open up for way too long, the quality will suffer. Discard yours if:

they are difficult or chewythe color of candy has actually changedthe smell is funny or off in any type of waythey taste bad or staleanything else seems off

Texture changes like hardening or being chewy don’t necessarily average that the marshmallows room spoiled. But, when again, i don’t think eating them so that you don’t have to throw them out is a good enough reason.

Marshmallows space made greatly of water, sugar, and gelatin. Friend eat them to satisfy your sweet tooth, not because you’re hungry. If friend aren’t delighted v the experience, ns don’t check out the point.

How to save Marshmallows To save Them Fresh

Store marshmallows in a cool and dark environment, away from resources of heat. As soon as you open up the bag, make sure it sits in a dry spot and also that it’s sealed tightly. A resealable bag is a good option here.

If you need to store marshmallows for a an extensive period, freeze them is additionally an option.

Those are the basics. Let’s gain into details.

Roasted marshmallows

Unopened Bags

Although marshmallows have actually a high water content, they space shelf-stable.

Assuming that it’s not the middle of a warm summer or her AC is on, room temperature is perfect because that them. Slightly below is also fine. That means a dark cupboard in the pantry or kitchen is a good choice.

If you live in the tropics, or it gets really warmth where you keep your marshmallows, refrigerating them might be the optimal choice.

If you have actually a history of marshmallows melting and sticking together, store them in the fridge or freezer instead.

Opened Bags

Once you open the bag, keep the marshmallows sealed tightly since they harden once exposed come air and also absorb any nearby moisture. You have the right to do that in a pair of ways.

The most basic is come twist the bag’s opening and also seal it with a rubber band, food clip, or a twisted tie.

Another alternative is to put the open up package into an airtight container. Or move the marshmallows into a freezer bag.

A tight seal additionally prevents the liquid from choose up strong odors from their environment.

If, despite that, her marshmallows tend to acquire sticky after storing them for some time, try sprinkling lock evenly with a tablespoon the cornstarch or powdered sugar.

If her marshmallows choose up humidity quickly and become dense and also chewy, shot placing a slice of white bread in the bag. The should help pick up any type of moisture and also leave the candy dry. The exact same trick functions if you’re softening hardened brown sugar.

Besides all of that, remember to save the bag away from straight light and also in a cool, dried place, similar to you do with an open up bag.

Marshmallows bag sealed through a clip

Can You freeze Marshmallows?

Marshmallows freeze surprisingly well.

While most sellers don’t talk around whether or not you deserve to freeze your product, provide it a shot. Specifically if friend don’t arrangement to consume the remainder of your stash whenever soon and don’t want to force it to stop waste food.

If the bag is unopened, there’s no added prep needed. Just chuck the bag right into the freezer, and you’re great to go.

If the parcel is opened, transfer the candy right into an airtight container or a freezer bag, and also then freeze. The most crucial thing here is that the marshmallows must be sealed tightly.

Remember not to load the candy also tightly, both in the container and in the freezer (if you’re utilizing a bag). You don’t want to squish the marshmallows in storage.

When it involves defrosting, all they need is 10 to 30 minutes on the counter, relying on the size. Or you can use them right away if you’re melting them in hot chocolate or do S’mores.


If the marshmallows turn out difficult after freezing, sprinkle them v some powdered sugar or cornstarch. Give the bag a good shake, and also the marshmallows have to be prepared to use.

As a bonus, marshmallows are less complicated to reduced into shapes as soon as they’re frozen. The only downside is that you need to hurry due to the fact that they come to room temperature yes, really fast.

Melted marshmallows in warm chocolate

Homemade Marshmallows

All of the suggestions over work for many homemade marshmallows. But not all.

There are hundreds of marshmallow recipes the end there, and each one is slightly different. Because of that, the recommendations when it concerns shelf life and also storage practices differ too.

Ideally, you should go with everything the cooking recipes suggests. If over there aren’t any kind of specifics, assume the room temperature in a sealed container or bag for a couple of mainly is okay.


When it concerns freezing, some recipe authors mention specifically that you shouldn’t freeze their marshmallows. If that’s the case, however you really desire to make the work, frozen a little batch and also see just how it goes.

If you got the marshmallows together a gift or bought castle in a liquid shop, don’t hesitate to ask how long lock are great for, or if you have the right to freeze the leftovers.

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The general suggestions I carry out are accurate and also work in most cases, but it’s always far better to confirm that with the source.