Can You Store Onions In The Refrigerator? [Cut, Uncut, Peeled…]

It’s common to store vegetables in the refrigerator to extend their life. But can you store onions in the refrigerator?

Yes, but how you store onions depends on the type and whether they’re still whole. Whole cured storage onions keep well in a cool, dry, dark place with good airflow. Whole sweet onions can benefit from refrigeration. Once you peel or cut an onion, keep it refrigerated in a sealed container at 40°F (4°C) or below.

Let’s understand this in a bit more detail.

Table Of Contents

How Long Do Onions Usually Stay Fresh?
How Long Do Onions Remain Fine In A Refrigerator?
Can You Store Uncut Onions In The Refrigerator?
Can You Store Peeled Onions In The Refrigerator?
Can You Store Cut Onions In The Refrigerator?
Can You Store Yellow Onions In The Refrigerator?
Can You Store Vidalia Onions In The Refrigerator?
Can You Store White Onions In The Refrigerator?
Can You Store Red Onions In The Refrigerator?
Can You Store Spring Onions, Scallions, And Shallots In The Refrigerator?
How To Identify A Spoiled Onion?
References

How Long Do Onions Usually Stay Fresh?

Whole cured storage onions can keep for several weeks, but their condition and the storage environment affect how long they last.

Moisture and poor ventilation can shorten their keeping life. Store sound bulbs, and check them regularly for decay.

Onions hold up well in cool, dry, and dark storage spaces with good air circulation.

You can keep them in an open plastic bin or basket in a suitable location, and they will keep well.

Cool storage is different from refrigeration. For example, the University of Kentucky’s storage guide lists 45°F to 55°F (about 7°C to 13°C) for whole onions kept in a cool, ventilated place.

That is not a recommended refrigerator setting. The FDA recommends keeping your refrigerator at 40°F (4°C) or below.

How Long Do Onions Remain Fine In A Refrigerator?

The refrigerator is useful for whole sweet onions and is where peeled or cut onions should be kept. It doesn’t add a fixed number of days to every onion’s storage life.

For peeled or cut onions, use a sealed container and plan to use them within seven days. This follows Colorado State University Extension’s storage guidance.

For cooked onions, follow the USDA’s guidance for leftovers: refrigerate them in shallow, covered containers within two hours, or within one hour if the air temperature is above 90°F (32°C). Keep them at 40°F (4°C) or below and use them within three to four days.

You don’t need to peel a whole onion just so that you can refrigerate it. Whole sweet onions can be stored intact. If you have already peeled an onion, keep it cold and covered.

Recommended Further Reading:

Can You Store Uncut Onions In The Refrigerator?

Whole cured storage onions usually keep well outside the refrigerator when the space is cool, dry and well ventilated. Leave their papery skins in place, and use a mesh bag or open basket.

Whole sweet onions can keep longer in the refrigerator. The UC Master Food Preserver Program recommends wrapping each bulb in a dry paper towel and placing it in the crisper drawer.

There’s no need to peel a whole onion just to store it. If you have already peeled one, follow the refrigerated-storage guidance below.

Can You Store Peeled Onions In The Refrigerator?

Yes. If you’ve already peeled an onion, put it in a clean, sealed container in the refrigerator. Keep the refrigerator at 40°F (4°C) or below.

Use whole peeled, sliced or chopped onions within seven days, following Colorado State University Extension’s guidance. That storage time assumes proper handling; it doesn’t make an onion safe if it has been left warm for too long.

Related Further Reading:

Can You Store Cut Onions In The Refrigerator?

If you have half an onion left over, refrigerate it within two hours of cutting it. If the air temperature is above 90°F (32°C), refrigerate it within one hour. Discard cut onions that have been left out longer than these limits.

Keep cut onions in a sealed container in the refrigerator and use them within seven days, as recommended by Iowa State University Extension.

Label the container with the date so that you can keep track of the storage time. Properly stored cut onions can be used raw or cooked, depending on your recipe.

Can You Store Yellow Onions In The Refrigerator?

Whole, cured yellow storage onions usually do not need refrigeration. Keep them in a cool, dry, dark place, and do not assume that every bulb will last for a fixed number of weeks.

For whole yellow, white and red onions kept unwashed in cool, ventilated storage, UMass Extension suggests using them within six weeks for best quality. This is a quality guide, not a promise that every onion will keep that long.

Keep whole, cured yellow storage onions in a container that allows airflow rather than an airtight plastic bag.

Once you peel or chop an onion, refrigerate it in a sealed container and use it within seven days.

Can You Store Vidalia Onions In The Refrigerator?

Yes. Whole Vidalia onions and other sweet onions can benefit from refrigeration. Keep the refrigerator at 40°F (4°C) or below, not 45°F to 55°F.

Wrap each whole bulb in a dry paper towel and keep it in the crisper drawer. You don’t need to peel it first.

For short-term use, whole Vidalias can also be kept in a cool, dry, ventilated place outside the refrigerator, as University of Georgia Extension explains. Refrigeration is useful for keeping quality; intact sweet onions don’t have the same storage needs as cut onions.

If you peel or slice a Vidalia onion, refrigerate it in a sealed container and use it within seven days.

Related Further Reading:

Can You Store White Onions In The Refrigerator?

Whole, cured white storage onions can be kept in a cool, dry, dark place with good airflow. How long they keep depends on their condition and the storage conditions.

If a white onion has been peeled or cut, refrigerate it in a sealed container at 40°F (4°C) or below and use it within seven days.

Can You Store Red Onions In The Refrigerator?

Whole, cured red storage onions can be kept in a cool, dry, dark place. Use an open basket or mesh bag that allows air to move around the bulbs, and check them regularly for decay.

Refrigerate peeled or cut red onions in a sealed container at 40°F (4°C) or below and use them within seven days.

Onions may sprout during storage, but sprouting alone is different from rot. The spoilage guidance below explains that distinction.

Interesting Further Reading:

Can You Store Spring Onions, Scallions, And Shallots In The Refrigerator?

Keep whole, dry shallot bulbs in a cool, dry place with good airflow, such as a mesh bag. Texas A&M Extension recommends cool, dry, ventilated storage for dry shallots. There is no need to peel them just for storage.

Once a shallot is peeled or cut, refrigerate it in a clean, covered container at 40°F (4°C) or below. This follows UConn’s guidance for prepared vegetables.

Store spring onions and scallions in the refrigerator. Purdue Extension recommends a plastic bag with a damp paper towel.

How To Identify A Spoiled Onion?

Discard onions that are rotting, slimy or extensively moldy. Soft, deteriorating flesh and unusual discoloration are warning signs, but they do not identify a specific cause.

Don’t sniff moldy food. Remove affected onions, check any nearby produce they touched, and clean the storage area, following the USDA’s mold-handling guidance.

Sprouting alone does not mean an onion has rotted. Purdue Extension says firm onion flesh can still be used after sprouting, but the bulb deteriorates faster, so use it promptly.

If you are unsure about mold or decay, discarding the onion is the safest choice.

An onion can carry harmful bacteria without looking or smelling spoiled. Appearance and smell can warn you about spoilage, but they cannot confirm safety or override the storage and handling guidance above.