How Long Do Onions Last In The Fridge And How To Store Them?

how long do onions last in the fridge

how long do onions last in the fridge

Onions are the easiest vegetable to store as it does not require any special consideration when it comes to storing. For example, tomatoes need to go in the fridge or they start to rot faster than onions. So, maybe you are wondering how long do onions last in the fridge.

Onions have a hard outer layer that prolongs their shelf life allowing consumers to store onions outside the fridge, in their cabinets where it’s cool and dry. However, the questions start to arise once you’ve processed the onion. After cutting it, peeling it, cooking it or any other process, how to store these onions and how long do onions last in the fridge become major questions boggling the minds of people leading them to search online for answers.

The way you process an onion definitely affects how you’re able to store them and for how long you can store them. Let’s have a look at some of the ways onions are prepared and stored. We’ll answer the most pressing questions, how long can you keep them outside or how long do onions last in the fridge.

Before we go on to how long do onions last in the fridge, one needs to first have the perfect onions available at their disposal. Having too ripe onions can definitely affect its longevity even when you keep them in the fridge. So, let’s look at how to shop for onions.

How to purchase onions?

If you select the right onions, you can store them longer than if you get bad onions.

If you’re looking to buy red or yellow onions, go for the ones that are crisp meaning dry, and have a papery skin. Check the outer layer too. The sign of a good onion is that it doesn’t have any sort of spotting or moisture on its outer layer.

Good onions should be very juicy otherwise it’s too ripe. Try to avoid onions that have started sprouting as these are the ones that will rot the fastest. Onions with a weird smell to them is a no-no as well. These types of onions tend to be too ripe or even bruised from the inside.

How long do onions last in the fridge when they are…

So there are many different ways to process onions. Let’s look at some of them and see if these processes affect the question at hand “how long do onions last in the fridge”.


The onion’s outer layer protects it from bacterial contamination, however, once peeled it is exposed to its surroundings which can aid in the growth of bacteria. You can delay the bacterial growth by keeping it in the fridge in an airtight container. The ideal fridge temperature should be 4C or below. but how long do onions last in the fridge after peeling them?

Although temperature can affect the longevity of items, it is not a solution to permanently enhance a food’s shelf life. Keeping peeled onions in the fridge helps prolong their life by 10 to 14 days. Notice the onion color and texture, if it starts to deteriorate a lot then consume it immediately before it rots or throws it away to avoid other onions turning bad.

Sliced or Diced

What if you’ve peeled your onions and now sliced them? How do you store these and how long do onions last in the fridge if you’ve sliced them. So the first thing is to wrap the cut onions in a plastic wrap or you can even keep them in airtight ziplock bags which are resealable. Once done, you can store it in the fridge for up to 10 days. If you wish to use it for a really long time, then dice a lot of onions, store them in bags and freeze them in the freezer for 3 to 6 months. Frozen cut onions can be used in plenty of dishes like soups, stews, and more.


Okay, so you’ve cooked a lot of onions and browned them a bit. Now you have too many cooked onions in your kitchen and additional stress on how to store them. Worry not, let the cooked onions cool down outside but make sure not to keep it outside for a few hours. A couple of minutes would do.

Keep the cooked onions in a ziplock bag and either keep it in the fridge for a few days or freezer for a couple of months. Again the question arises, how long do onions last in the fridge when cooked? Well, according to several health sources, cooked onions can’t be kept outside for a few hours but can be kept in the fridge for at least three to five days and three months as frozen.


Everyone knows that pickling a vegetable is the easiest way to prolong the life of the vegetable without the added costs. It is cheap, convenient, and easy. Pickling a vegetable or in this case onion will help restrict the growth of bacteria and prolong the shelf life by at least six months. So, how do you pickle onions? Simply place peeled or cut onions in a glass and add the pickle juice to it, a mixture of vinegar, salt, sugar, and spices. Once you open the jar, make sure to refrigerate it. The pickled onions in a fridge can last you for a good few months.

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