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How Long Do Marshmallows last? Do Marshmallows Go Bad?

Can’t you also resist buying marshmallows whenever you go grocery shopping?

If yes, then don’t worry; it is a common issue as these are so delicious thus everyone has their stock at home.

However, while storing, people get perplexed that do marshmallows go bad or if we can keep them for an indefinite period.

You might have noticed that after storing some time, marshmallows become sticky.

This happens because they decline in quality when stored for a more extended period.

So these cannot be kept for an extended period as they will go bad.

What are Marshmallows?

These are like sweet, chewy, and fluffy candy when eaten raw.

One can also have them after heating or roasting; as they turn, they become crispy once heated.

The main ingredients used to make them are sugar and corn syrup, gelatin, and water.

Do you know that this candy is also used for medical purposes? Yes, it is true the marshmallow plant was used to make different herbal medicines that treat various ailments.

These include ulcers, cough, sore throat, skin infections, and many others.

Marshmallows are considered effective in healing cutaneous leishmaniasis, which is a skin issue caused by parasites.

It also contains compounds such as polysaccharides and flavonoids which can help you to reduce chronic and acute inflammation.

How Long Do Marshmallows last? Do Marshmallows Go Bad?

They come in a pack with a labeled date, no matter whether you buy them from a store or online.

One can consider that date to know how long one can retain their best quality.

Marshmallows do not go bad if kept under good storage conditions and can be used beyond their best-by date.

If we talk about its shelf life, one can keep an unopened pack in the pantry for 1 to 2 months.

However, anyone can freeze them if they desire to exceed this period.

In the freezer, they can be kept and preserved for six months.

If you are not going to use them in the recent period, then avoid opening the pack.

That is because once the package is opened, it will decline in quality faster.

After opening, it gets continuous exposure to air, which makes the texture of the marshmallow stiff.

Therefore the shelf life of an opened pack is short, and in a pantry, it can only be preserved for one week.

If you have an open pack and want to slow down its oxidation process, then you should put it in the freezer.

Freezing will increase its shelf life, and it will serve for a period of more than three months.

The shelf life of homemade marshmallows will be short as they do not contain preservatives.

How to Tell if Marshmallows Have Gone Bad?

  • Sticky and Hard Texture

It would be best to look for unusual changes to check whether the old stored marshmallows are still edible.

When they are fresh, their texture is light and fluffy, so one can see if it has changed after storage.

Take one marshmallow in hand and squeeze it a little, but if it’s complex or sticky, it has gone bad.

Continuous exposure to air can make it more challenging; thus, you should avoid its consumption.

  • Stale and Off Smell

You know how appetizing the aroma of marshmallows is when they are fresh.

However, it does not last forever, as when these are stored, they develop a foul odor.

This can either be because of prolonged storage or strong around strong-scented food items.

Therefore to find out, you can open the pack and sniff it; if there is a stale or off smell, then you have to discard it.

  • Bug Infestation

In pantry storage, bug infestation is a big problem because people are unaware that the kitchen cabinets are infested.

After storage, they find bugs in their marshmallow pack; thus, they have to throw all the content out.

Bugs get attracted to flour and sugar more quickly.

So if you are using an old pack, then inspect that it does not have any holes or bugs inside.

How to Store Marshmallows?

  • Storage at a Cool and Dark Place

While storing marshmallows, one must be careful as they get moisture easily.

Therefore, we need to avoid storage at places that are prone to moisture.

The place should be dry and away from heat places too.

If these are kept at high temperatures, they lose their potency and texture.

  • Resealable Bag

If you are someone who frequently has marshmallows, then you must add them to a sealed jar.

Sealing is essential as they are affected by heat, air, and moisture, so that sealing will prevent all the damage.

Make sure the bag can be resealed easily, as continuous opening can change the texture and taste of marshmallows.

  • Leave Breathable Space

At the time of storage, you must check that you are adding more marshmallows than required.

People try to fit the entire pack in one jar for convenience but that further ruin the freshness of these candies.

One should not pack them too tightly as they get squished and becomes hard in texture.

So remember to leave a breathable space between them after storing them in a container.


If you are not planning to use it for an extended period, then an airtight container will be best.

But in case you want to use it frequently, you can use a Ziploc bag as they are resealable.

These bags will also secure them to absorb any foul odor during storage.

If anyone has frozen them, then defrosting is not necessary because they become neutral in no time once put at room temperature.

Yield: 1 Serving

How Long Do Marshmallows last? Do Marshmallows Go Bad?

How Long Do Marshmallows last? Do Marshmallows Go Bad?
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes


  • Marshmallows
  • Air-tight containers or Ziplock bags
  • Labels and markers


  1. Store your product in an labelled container in a cool, dark place like the pantry or fridge.
  2. If your food is frozen, allow it to thaw in the fridge before cooking.
  3. Make sure to look for signs that your food has gone bad before eating it.
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