Does Olive Oil Go Bad

by John Staughton (BASc, BFA) last updated -

 Likes  Comments

Many people ask the question – does olive oil go bad? – but it can be difficult to know when it’s time to throw away your bottle and get a fresh one.

Does Olive Oil Go Bad?

As with any natural product, olive oil does have a shelf life, and over time, exposure to oxygen will cause oxidation and rancidity in olive oil. This is first seen in a decline of the oil’s quality, and while it could take years before the oil is truly unusable, it is always best to use fresh and fully potent olive oil.

Before you decide whether to toss or keep your old oil, it is important to know how to tell if your olive oil has gone bad. Most importantly, good olive oil should smell strongly of olives, whereas rancid or old olive oil will smell very differently, closer to crayons or other greasy items. It will also taste strange, leaving an unpleasant residue in the mouth.

Close up of olive oil being poured from a bottle into a bowl, with green olives and leaves on a wooden table

Extra virgin olive oil is made by crushing olives and extracting the juice. Photo Credit: Shutterstock

In most cases, when properly sealed and stored in a dark, cool place (not the refrigerator), olive oil can keep for two years or so before the early signs of rancidity begin to set in. As mentioned earlier, olive oil may start to lose its quality after two years, but generally, it still functions after that as a cooking oil. That being said, olive oil can be found at relatively reasonable prices, so buying a new bottle should always be considered after a few years.

How to Keep Extra Virgin Olive Oil Fresh?

If you have a bottle of extra virgin olive oil that you want to keep as fresh as possible, the best thing to do is not open it until you are truly ready to start using it. In other words, keeping 4 different olive oils open at the same time is a foolish choice. The three main factors to consider are the light, temperature, and airflow; excessive exposure to sunlight, heat or air (oxygen) will increase the rate of oxidation and rancidity. Choosing olive oils with tinted containers is a great way to slow the process of rancidity.

Keeping your oil cool is also important, but it isn’t essential to store it in the refrigerator. Now, it is important to remember that even in sealed bottles in appropriate environments, oil isn’t like wine; excessively old oils will naturally be less potent and may have an unpleasant flavor. Protection Status
About the Author

John Staughton is a traveling writer, editor, publisher and photographer with English and Integrative Biology degrees from the University of Illinois in Champaign-Urbana (USA). He co-founded the literary journal, Sheriff Nottingham, and now serves as the Content Director for Stain’d Arts, a non-profit based in Denver, Colorado. On a perpetual journey towards the idea of home, he uses words to educate, inspire, uplift and evolve.

Rate this article
Average rating 4.0 out of 5.0 based on 3 user(s).

Latest Health News:

A woman clinician injecting a young girl.

Increase Screening Of Asymptomatic People For COVID Control

With the coronavirus pandemic showing signs of slowing down, there is an increased need for precaution to ensure that it does not flare up again. New research,…

Group of wood figurines huddled together with one figure outside the group.

Pandemics, Epidemics Can Worsen Social Prejudices

A time of crisis can exacerbate our social prejudices, particularly bigotry and xenophobia. A study, published in the journal Proceedings of The Royal Society,…

Graphic of the human brain

Research Reveals How Memory Works

Why do our memories not get muddled with other new events? Why are they long-lasting? Researchers from the University of Bristol may have found answers to…