How Long Does Peanut Oil Last

How Long Does Peanut Oil Last?

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How long does peanut oil? Peanut oil is a cooking oil obtained from the seeds of a peanut plant and can also be called groundnut oil.

It was first experimented with and produced in France in 1802.

It contains about 119 kcal per serving and is rich in fat, it is also a good source of vitamin E and contains iron, zinc, and phytosterols.

This rich oil is healthy for consumption as it helps fight bad cholesterol, improves insulin secretion,

Which lowers blood sugar levels, contains antioxidants that protect us from chronic diseases,

It is also good for the skin and hair, and it boosts immunity.

Peanut oil should not be consumed in excess as it has bad effects such as weight gain, increased

So, how long does peanut oil last once used?

After use, peanut oil will last for up to 3 months when stored properly in the fridge. You can also store it in the pantry, but it can only last for about 2 weeks. To preserve your peanut oil after using it, all you need to do is to store it properly in the fridge.

First, you need to allow it to cool at room temperature,

Then you strain the oil into a clean container using a fine strainer or cheesecloth,

The strainer helps to filter the oil, preventing food particles from entering the container, then you place it in the fridge where it will remain safe.



Does Peanuts Oil Need To Be Refrigerated?

Yes, peanut oil needs to be refrigerated when you want to store it for a long period of time.

It needs to be refrigerated after opening or after use, to prolong its shelf life,

it should be stored in a cool, dry place and your fridge is the best place for it once opened.

Although it won’t become rancid easily at room temperature,

This can be kept in the pantry for about 6 months after opening.

It may lose its flavor and you might end up discarding it.

It is best if you refrigerate your groundnut oil not only to prolong its shelf life but to also ensure its freshness remains intact.


How Long Does Peanut Oil Last In The Fridge?

Peanut oil will last fresh in the fridge for 12 to 18 months in top quality without you having to worry about safety.

After opening, you should store the leftovers in the fridge.

If continuously refrigerated at a stable temperature, it will maintain its distinct flavor and freshness,

even if it exceeds the printed dates its quality can not be affected as long as it remains in the fridge.

Before storing ensure the seal is intact and the container of your groundnut oil is in good condition,

if there is damage to the container,

You can transfer the oil into an airtight container before placing it in the fridge.


How Long Does Used Peanut Oil Last After Opening?

After opening, peanut oil will last depending on how it is stored.

Once opened, its shelf life is reduced, and is short when left at room temperature, but you can extend its shelf life for a long period of time when put into refrigeration.

If stored properly at room temperature in the pantry it will last for 4 to 6 months without losing its quality.

When stored in the fridge with continuous refrigeration, peanut oil will last for 12 to 18 months without deterioration in its quality.

It is advisable to store your opened peanut oil in the fridge after opening because it promotes a longer and secured shelf life.


How Long Does Peanut Oil Last After Expiration Date?

Different brands have different expiration dates and estimates of lifespan on their peanut oil.

Remember that the expiry date is just the manufacturer’s estimate of how long the product will remain in top quality.

If unopened, peanut oil will be good for up to 2 years after the expiry dates.

After opening, it will last for just 1 year if stored properly in the refrigerator,

and a few months when stored in the pantry.

Anything more than that will result in an unappealing taste and smell.

Sometimes, your groundnut oil can still get bad even before the printed dates elapse.

There can be a situation where you purchase fresh groundnut oil, but without proper storage and exposure to heat and light,

it will become contaminated and unsafe irrespective of how long the expiry date says it will last.


How Long Can I Reuse Peanut Oil?

You can reuse peanut oil several times within the three-month storage period but you have to sterilize it before another use by allowing it to heat up to 350°F before adding any food.

When stored properly it can be reused up to 3 times before disposing of.

You could also reuse it up to 5 times, but 3 times is guaranteed top quality.

Used peanut oil should be strained with a fine strainer into an airtight container, before storing it in a cool, dark place.

The fridge is the best place to store your used groundnut oil because it can guarantee your oil 3 months of safety.


Does Peanut Oil Spoil?

Peanut oil will eventually go bad, although it has a very long and stable shelf life, it can go bad if it is not stored properly in the best condition.

This oil will last for up to 18 months in the fridge after opening, and when stored unopened in the pantry,

It will last until its printed dates and you can transfer your expired peanut oil into the fridge where it will remain safe for up to 2 years.

You should store it away from heat and sunlight,

If it is exposed to air or high temperature, your fresh oil will begin to deteriorate quickly and will be unsafe for consumption.


How Long Does Used Peanut Oil Last At Room Temperature?

Used peanut oil will last for up to 2 weeks at room temperature if stored properly without losing its quality.

It should be kept in the pantry where it is safe from light and heat and is always at a steady temperature.

Leaving used groundnut oil at room temperature is not the best way to store it, as it can get contaminated and go rancid easily.

Before storing, ensure that the container of your groundnut oil is sealed well and there is no damage to the container.


Can Old Peanut Oil Make You Sick?

Old groundnut oil will hardly make you fall sick within a short time because it has a stable shelf life and can still be consumed months after its printed dates.

But you should be mindful of what you are consuming so as not to have food poisoning.

In worst cases, old groundnut oil will only make you experience mild food poisoning symptoms like nausea and diarrhea.

It is also suspected that regular consumption could contribute to the development of cardiovascular illness,

Inflammatory diseases, and certain cancers.

It is best you consume fresh peanut oil to be completely safe from any harm.


How To Store Used Peanut Oil For Reuse

To store used peanut oil, you just need to follow some easy steps.

After frying, allow it to cool, then you strain the oil with a fine strainer into an airtight container, cover the container well and keep it in a cool, dark place.

You can store it in the pantry for a short period of time.

Keeping it in the fridge is the best way to store your used peanut oil.

It will keep for up to 3 months when stored properly in the fridge.

You can store and reuse groundnut oil 3 to 5 times before disposing of any leftovers.

It should not be exposed to heat and light as it begins to degrade once exposed.


How To Tell If Peanut Oil Has Gone Bad

Peanut oil might begin to go bad without you noticing any sign.

They deteriorate slowly and may not be dangerous at the beginning stage of spoilage,

but you can detect if the food you fry does not give the desired taste.

You can tell if your groundnut oil has gone rancid by its smell, color, and taste.

If your oil has an unpleasant odor, it has probably gone rancid and should be discarded.

You will notice that the color is becoming darker than normal, discard it immediately.

If this oil smells okay and looks fine, you can give it a taste to confirm.

So, it tastes fine, you can consume it without any fear.


What Does Used Peanut Oil Taste Like?

Used peanut oil has a light, neutral flavor.

Do not expect it to taste like the food that was fried

This is because it has a special property of not absorbing the flavor of the foods cooked in it.

Therefore allows you to cook different foods in the same oil and each of them will still maintain its own unique taste.

Sometimes groundnut oil may have a slightly nutty taste.


How To Dispose Of Peanut Oil

You can dispose of peanut oil in various ways.

You can reuse your groundnut oil for cooking and frying until it finishes.

But ensure you filter the oil with a strainer into an airtight container before placing it in the fridge,

where it will be safe for later use.

You can also dispose of groundnut oil by trashing it.

After use, allow it to cool, then pour it into a sealable plastic container,

cover it tightly and throw it out in the waste bin.

Another way to dispose of your groundnut oil is by recycling.

Once you are done with the oil, allow it to cool and pour it into a leak-proof container,

then drop it close to your waste bin, for pickup by recycling companies.


10 Best Substitutes For Used Peanut Oil

Many forms of cooking oil can substitute this oil, but it is still unique on its own.

Substitutes for peanut oil can be;

Canola oil, Safflower oil, Sunflower oil, Grapeseed oil, Vegetable oil, Almond oil, Soybean oil, Walnut oil, Sesame oil, Corn oil.

Any of these listed above can be substituted for groundnut oil.


What Does Rancid Peanut Oil Smell Like?

Rancid groundnut oil has an unpleasant smell like fermented or rotten fruits.

It can also have a bitter, soapy smell, rancid peanut oil can also give off an old paint-like smell.

If your groundnut oil develops any of these foul smells, you should discard it immediately, as it is unsafe for consumption.



Peanut oil is special cooking oil and a very healthy one when compared to other cooking oil.

Its unique property of not absorbing the flavor of foods cooked in it and high smoking point lets it stand out.

It is rich in fat and vitamins which makes it healthy for consumption.

Remember, how long does peanut oil last?

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