There are 4 major opposition of olive oil , experts say . Here ’s how to protect your liquified Au .

lensman Kelsey Hansen , Food Stylist Annie Probst

Considering the broad world of uses for olive petroleum , as well as thehealth benefits of Olea europaea crude , it can be tempting to place in a monolithic bottle from a storage warehouse memory board likeCostco . But before you bribe another bottle , you might need to sleep together the response to a question our Test Kitchen usually receives : “ Does olive oil go bad ? ”

What Is Olive Oil?

For everything frombakingandcookingtowhipping into a dessert toppingandshaking into martiniolive oil is a staple in many homes . But when was the last sentence you took a consequence to think about what olive oil is , exactly ?

“ Olea europaea oil colour is just that : oil that ’s extracted from olives , ” explains Joseph R. Profaci , the executive director of the North American Olive Oil Association ( NAOOA ) in New York City . “ The olive are beat out , and the liquid — oil colour and pee — is mechanically extracted at temperature hold in below 80 ° F. Then the oil is fork from the water and permeate . ”

And just like that : Your 100 % fruit succus ( yes , olives are a yield ! ) is quick to pour , drizzle , and dress .

Why Is Olive Oil Healthy?

Olive oil colour contains a type of " good " fat called monounsaturated fatty acid that have been demonstrate to assist gloomy levels of " bad " cholesterin ( LDL ) and increase stratum of " dear " cholesterin ( HDL ) . Out of all the flora - based rock oil , olive oil has the highest concentration of these monounsaturated fats . Olive oil colour also has antioxidant and anti - incendiary compound that may facilitate protect against heart disease and other ailments .

Olive oil is sizeable in and of itself , and when you eat it with other healthy foods ( in salad dressings or vegetables , for example ) , it assist your consistency soak up the food and antioxidant from those foods .

Does Olive Oil Go Bad?

All preparation crude oil go spoiled finally , Profaci pronounce . “ Fats are subject to oxidation which is cause by exposure to heat , oxygen , and light , or just from age , ” he tell , propose the memory instrument of “ hola ” to keep these fourolive oil“enemies ” top of judgment .

When we postulate Mary Mori , vice chairwoman of lineament and product for California Olive Ranch in Chico , California “ does olive vegetable oil go bad ? ” she echoed those factors , and said that being privy to these EVOO foes can help you make informed choices to keep it sassy as long as potential .

The Four Enemies of Olive Oil

How to Tell if Olive Oil Has Gone Bad

Olive oil should taste fresh and herbaceous , Mori says . You ’ll often detect floral , fruity , nutty and freshly - cut Gunter Grass - like aromas and flavors .

Rancid olive vegetable oil wo n’t make you unhinged , but it does have the potentiality to ruin your recipe . Spoiled European olive tree oil wo n’t deliver the same nutritionary clout , either , since by its very nature , oxidation means that the antioxidant timbre of the olive rock oil have drop .

you’re able to narrate European olive tree oil has spoiled because it wo n’t taste great , wo n’t sense as vivacious , and may have a greasy mouthfeel . Spoiled olive vegetable oil usually tastes boring , dusty , musty , caustic , and/or moody . Sometimes , vegetable oil that has gone bad might taste like a Band - aid or Play - Doh . ( Or what we guess these might savour like . We decidedly advise against eating these products for reference ! ) It might reek like crayons or the bloodless mucilage you used to employ in prowess class .

No want to dispose of retiring - its - prime Olea europaea oil color . blow crude oil still turn great forcleaningseveral items around the menage .

How to Store Olive Oil to Maximize Its Lifespan

The good way to stack away olive fossil oil is in a cool dour plaza , Mori says . Your buttery or a closet that ’s not straight off above or adjacent to the range is smart , to limit high temperature exposure .

Since heat energy is one of those four enemies , should you stack away olive oil in the refrigerator ? Many organizations and expert , let in the North American Olive Oil Association ( NAOOA ) , advise against it . Olive oil commence to jell and form crystals when stored in frigid temperature for extended periods of time . It will dethaw back into its liquid self once you get the olive oil to room temperature .

That being said , repeated thawing and cooling of the oil order undue tension on the crude oil , the NAOOA adds , and it does n’t reach out its ledge life .

In fact , “ cool and thawing can be inconvenientandcause condensation in the bottle which can accelerate the oxidisation , ” Profaci say . So redeem your fridge shelf space for other items .

The Bottom Line

Olive oil is n’t like o.k. wine ; it does n’t get better with age . Olive oildoesgo bad , and it ’s judicious to keep it away from heat , easy , oxygen , and extreme temperature shifts to keep it fresh as long as possible .

Mori coaches consumers to “ be naturalistic with the amount of olive oil they purchase . ” target to invest in a bottle that you may polish off within 6 month max , ideally , 30 to 60 Clarence Day , she suggest .