How Long Do Unpeeled Onions Last in the Fridge?

You might not be able to identify a bad onion when you buy one. The first indication of an onion’s quality is its scent, although the flesh’s texture and color can also be used as a guide. You should discard them because brown stains and a mushy neck are the most obvious signs of a bad onion. A red flag is also an onion that is a little limp or spongy.

In order to prolong the shelf life of raw onions, you need to keep them in a cool and dark place. Onions are very susceptible to moisture and can spoil easily at high humidity and temperatures. They need temperatures that are between 40-50degF (4-5degC), with proper ventilation. To maintain the ideal temperature, store them in an open basket, bamboo steamer, netted or mesh bag, or pantyhose. If you are storing your onions in the refrigerator, it is best to keep them in a dark place. Darkness is ideal for preserving raw onions because it reduces humidity and temperature changes.

Unpeeled Onions

How Long do Unpeeled Onions Last in the Fridge

If this applies to you, it might be best to keep onions in the refrigerator for the longest possible shelf life. They will also last for at least two to three months in the refrigerator, but keep in mind that because onions are such good moisture absorbers, the texture may become a little mushy there.

Finding a space in our houses that is as cool as this can be difficult for many of us. If this applies to you, it might be best to keep onions in the refrigerator for the longest possible shelf life. They will also last for at least two to three months in the refrigerator, but keep in mind that because onions are such good moisture absorbers, the texture may become a little mushy there.

However, entire, raw onions will last two to four weeks at room temperature if you have to store them there due to a lack of refrigerator space.

To avoid mold when keeping onions, whether at room temperature or in a refrigerator, make sure there is adequate ventilation. You can use a paper bag with a loosely covering, a mesh bag, or an open basket. Never keep onions in a plastic bag since the ventilation won’t be adequate.

What are the Symptoms Of a Bad Onion?

Examining and touching your onions will help you determine whether they are bad or not.

Using taste to assess whether or not something is spoiled is not recommended. So let’s examine those two signs of a rotten onion in more detail.

When Your Onion Has Brown Spots, It’s Time To Throw It Out.

You should toss the items because of the brown stains, which signal mold growth. The onion should be peeled before doing this. The onion should be thrown out if any kind of mold is growing on it.


Mold can be grey, white, or green. Your onion is about to come out and might be a little softer on the inside if it starts to sprout from the top.


A mushy onion is a bad onion; it has started to rot beneath the papery skin and ought to be thrown away. You want your onions to be substantial and heavy for their size when you crush them.

What Smells Like a Bad Onion?

Your onions should always have crisp, dry outer skins, and the flesh should feel firm to the touch. A spoilt or rotten onion has a smell that is comparable to compost that has started to rot. The onion will likely go to the trash if it smells anything other than zingy onion.

Is Onion a Vegetable or a Spice?

The edible onion bulb is a vegetable. Despite being predominantly a vegetable, it also serves as a spice in that it may provide a range of meat and vegetable meals with a fragrant undertone without being the main ingredient. Look at the onion’s peel to determine whether it is rotting. An excellent onion is crisp and firm, while a subpar onion is squishy. If the skin is supple, it should probably be thrown away.

A soft onion that has sprouted might not be useful. You can also examine it visually; rotten or destroyed fruit has black spots on its surface.

Poor onions are frequently still usable, but it might be hard to discern if an apple is rotten. Another sign of a poor onion is its delicate skin. Even though this can be a red flag, it’s critical to avoid consuming a spoiled onion.

A beautiful onion is solid, without any brown or black patches, and it isn’t too soft either. These characteristics indicate that onions should be thrown out as soon as possible. However, it is preferable to toss an onion if you are unclear about its color or texture. If properly stored, onions can last up to a week in the refrigerator, depending on the early. Try to keep the whole onions in a great position in a huge refrigerator and keep an eye on them.

Is Eating Raw Onions Healthy?

Onions contain organic sulfur compounds. Organic sulphur compounds reduce your risk of heart disease and stroke by lowering your body’s level of cholesterol and perhaps dissolving blood clots. Rather than eating cooked onions, go for raw ones to get the maximum sulfur compounds from them. Consuming large amounts of raw red onion does not lower cholesterol or blood sugar levels in those with polycystic ovarian syndrome compared to smaller amounts (80-120 grams daily) (20-30 grams daily). Eating a lot of food could slightly increase your body mass index (BMI). Men are afflicted by prostate cancer.

When is the Best Time to Eat an Onion?

In the summer, eating raw onion is advised since it can help you stay cool and has a number of health advantages. Raw onion is one of the simplest ways to add flavor and nutrition to your foods. Consuming onions before bed is the best way to gain the greatest sleep benefits from them, but doing so can also lead to bloating and acid reflux. If you are healthy and don’t suffer from any of these diseases, onions are helpful for you. Late-night consumption of onions results in bloating.

Is an Onion Good for Your Immune System?

Scientists have linked onions to a number of health benefits. The majority of the benefits are caused by antioxidants. Quercetin is a particular type of antioxidant that, according to research, has several health benefits. According to one study, quercetin boosts the immune system and decreases inflammation. Numerous health advantages of onions are available. These nutrient-rich vegetables have powerful compounds that may reduce your risk of cancer and heart disease. Onions can aid with digestion and have antibacterial properties, which can boost the immune system.

Although dairy is frequently cited as helping to improve bone health, several other foods, including onions, may also support strong bones. 24 middle-aged and postmenopausal women who consumed 3.4 ounces (100 ml) of onion juice every day for eight weeks increased their bone mineral density and antioxidant activity when compared to a control group.

Onions are rich in prebiotics and fiber, both of which are crucial for gut health. Prebiotics are indigestible fibers that the beneficial bacteria in your gut break down. Short-chain fatty acids like acetate, propionate, and butyrate are created by gut bacteria as a result of prebiotic intake. Studies have shown that these short-chain fatty acids help with digestion, immunity, inflammation reduction, and gut health.

Reference: Characterization of onion lectin (Allium cepa agglutinin) as an immunomodulatory protein inducing Th1-type immune response in vitro

How do I Pick the Best Onion for Cooking?

Though the majority of alliums are renowned for improving food flavor, not all of them are created equal. Additionally, you can’t always use a different onion in place of a different onion (unless you want your food to taste radically different)! Here are some tips for maximizing each allium variety.


These individuals are amazingly adaptable, and they are delicious either way. Shallots can be used raw in our favorite vinaigrette or fried and added to soups, salads, noodle dishes, and more. Shallots are fantastic when roasted, in addition to having a nice flavor and appealing crunch (like in this beautifully cooked chicken) (like in this beautifully roasted chicken).

Citron Onions

Pearl onions are smaller and flatter than the onion you probably have on your kitchen counter, whereas Cipollini onions are larger than pearl onions. It is preferable to fry them. Heck claims that when they are cooked, they take on a “lovely, creamy, and have a depth of umami” quality. Even though they taste great in agrodolce or as a side dish, when cooked they hold up a little better than pearl onions. As a result, to give a rich umami taste to our Classic Beef Pot Roast, we like to use them.

The Pearl Onion

Although they take a bit longer to peel, these are well worth the extra work. Try replacing pearl onions with shallots in our favorite mushroom sauce! Pearl onions are classy enough to stand alone as a side dish but are also fantastic in almost any sauce. Before dinner, frozen pearl onions will do if you don’t feel like peeling all of the tiny onions.

Savory Onions

The greatest time to use sweet onions is when you want a delicate onion flavor that won’t overpower your recipe. Sweet onions are the mildest and sweetest of the bunch (thus the name). They aren’t particularly durable, and if they are cooked for too long or at a temperature that is too high, they will become mush.

Before combining them with fresh tomatoes, basil, salt, and pepper for a basic pasta sauce or using them in our Szechuan Chicken Stir-Fry, we suggest sautéing them for a couple of minutes.

White Onions

If you enjoy Mexican cuisine, use this onion. They add an oniony brightness without overpowering other flavors and have a quick-acting bite. White onions are delicious when consumed raw, especially when added to salsas, salads, and tacos as a garnish.

Yellow Onions

They have a flavor profile that falls somewhere between sweet and red onions, according to Bashinsky, who calls them a “great general purpose onion.” These hardworking onions have a high starch content that enables them to withstand intense and prolonged cooking temperatures without disintegrating. Using yellow onions is ideal for rich, long-cooking meals like Vegetarian Bolognese or Caramelized Sherry Onions.


For the best storage of unpeeled onions, make sure to store them in the fridge or in a freezer bag. These two methods will prevent moisture from entering the storage container and drying out the onions. They should also be stored away from other products that release ethylene, which accelerates ripening and spoilage. To help keep the onions fresh, keep them out of direct sunlight and in a cool, dry place.

The quality of your onions is the first thing to check. Look for firm, smooth flesh. If it’s a little soft or spongy, chances are it’s gone bad. A silver-green powdery mold will grow on it, but it’s not dangerous to eat it. If it’s still green, you can just discard it. Make sure to clean the onions thoroughly, as these will help extend their shelf life.