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How Long Do Onions Last? Do They Go Bad?

Have you ever opened a kitchen cupboard to grab an onion for your supper and wondered how long it had been in there?

Or, have you ever faced the conundrum of whether or not that bag of onions from last week’s grocery run was still good enough to use?

Well, if you’ve asked yourself these questions, then wonder no more.

In this blog post, we’ll look at the answer – analyzing all aspects such as optimum storage conditions and methods so that next time things can be just a little bit clearer when it comes to keeping your onions fresh.

What’s Onion?

Onions are a type of vegetable that are used in many different dishes.

They have a strong flavor and can be either cooked or raw.

Onions are a good source of vitamins and minerals, and they also contain antioxidants that can help to improve your health.

There are many different types of onions, including red, white, and yellow onions.

You can also find organic onions at some grocery stores.

How to Store Onions?

Onions are a staple in many kitchens, but they can be tricky to store.

If not stored properly, onions can spoil quickly and become inedible.

Here are a few tips on how to store onions so that they last as long as possible.

First, onions should be stored in a cool, dry place.

A pantry or cupboard is ideal, but an onion can also be stored in the fridge if necessary.

However, the fridge is not ideal because the cold temperature can cause the onion to sprout more quickly.

Second, onions should not be stored near other fruits and vegetables.

This is because onions give off a gas that can cause other produce to spoil more quickly.

Third, onions should be stored in a breathable container.

A mesh bag or open container will allow air to circulate around the onions and prevent them from becoming sweaty or mouldy.

How Long Do Onions Last?

Onions are a root vegetable that are part of the allium family, which also includes garlic, leeks, and chives.

Onions are grown throughout the world and are used in cuisines of many different cultures.

They can be eaten raw, cooked, or pickled.

Onions last anywhere from a few days to several weeks, depending on how they are stored.

If you store them properly, they will last longer.

Here are some tips for storing onions:

  • Store onions in a cool, dry place. A refrigerator is ideal, but a pantry or cupboard will also work.
  • Place onions in a mesh bag or breathable container. This will allow them to get the airflow they need to stay fresh.
  • Do not wash onions until you are ready to use them. Washing them prematurely will cause them to spoil faster.
  • Cut off the root end and the green shoot before storing onions. These parts of the onion are more likely to rot than the rest of the onion.

By following these storage tips, you can keep your onions fresh for several weeks.

Enjoy them in your favorite recipes.

Can You Freeze Onions?

Yes, you can freeze onions.

In fact, freezing is one of the best ways to preserve onions so that you can enjoy them for months to come.

When properly stored in the freezer, onions will retain their quality for up to 8 months.

There are a few different methods you can use to freeze onions.

The most popular method is to chop the onions into small pieces and then store them in freezer-safe bags or containers.

Another option is to slice the onions thin and then flash freeze them on a baking sheet before transferring them to a freezer-safe bag or container.

Whichever method you choose, be sure to label your onions with the date so that you can keep track of when they were frozen.

When it comes time to use your frozen onions, there is no need to thaw them first.

Simply take out as many as you need and add them directly to whatever dish you are preparing.

You may find that the onions have a slightly different texture after being frozen, but they will still taste just as delicious.

How To Tell If Onions are Bad?

Onions are a staple in many kitchens because they add flavor to so many dishes.

But sometimes, onions can go bad without you even realizing it.

Here are a few signs that your onion might be past its prime:

  • The skin of the onion is dry and wrinkled.
  • The onion is starting to sprout.
  • The onion has developed mold.
  • The onion has changed colors, usually from white to brown or black.
  • The onion has a strong odor.

If you notice any of these signs, it’s best to throw out the onion and get a new one.

Although onions can last for weeks or even months, once they start to go bad, they can spoil quickly.

So it’s better to err on the side of caution and start with a fresh onion when cooking.


Onions are a great staple to have in any kitchen.

They are versatile and can last a long time if stored properly.

In this blog post, we discussed how to store onions so that they last longer.

We also answered the question of how long onions usually last.

Onions can last for several weeks or even up to several months if stored in the correct conditions.

Finally, we answered the question of whether you can freeze onions.

You can freeze onions, but they will not last as long as they would if they were fresh.

If you have any other questions about onions, be sure to check out our onion FAQs.

How Long Do Onions Last? Do They Go Bad?

5 from 1 vote
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Shelf Life
Servings 1 Serving


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


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