These black pearls of the Mediterranean are more famous for their oil than themselves. But still, whether you put them on your pizza, eat them at breakfast or simply have them with bread, black olives are loved and eaten all around the world.

They’re also one of those few foods that are delicious and have tons of health benefits at the same time. They’re packed full of healthy fats like oleic acid, which drastically lessens any risk of heart disease and inflammation in the body. They are full of antioxidants like vitamin E, oleuropein, hydroxytyrosol, tyrosol, and minerals like calcium, potassium, and magnesium.

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You should be careful about the olives you use in your dishes though; they can cause just as much harm than good if they’ve gone off. To help you avoid that, today I’ll show you how to tell if black olives have gone bad. I’ll also let you know how to properly store them to prolong their shelf life.


1 How Long Do Black Olives Last?2 How to Tell if Black Olives Have Gone Bad4 How to Store Black Olives

How Long Do Black Olives Last?

If you want to prolong the shelf life of your olives, it’s important to store them properly. There are some key factors you need to understand when storing them.

Right Temperature

If you haven’t opened your jar of olives yet, then you can store them at room temperature in your pantry. However, you should be careful about the temperature of your pantry, it shouldn’t be hotter than 75°F.

Another thing to keep an eye out for is sunlight and heat. Even though your jar is unopened, exposure to sunlight or any kind of heat source may impact the taste. Thus, a dark, dry, and cool place is the way to go for your unopened jar of olives.

After you have opened the jar, you should always keep it in your refrigerator to prevent spoilage.

Tight Seal

You should always tightly close the lid of your olive jar, otherwise they may expire faster or even spoil due to environmental factors (such as mold growth, harmful airborne bacteria etc).

If, by any chance, you cannot find the lid of your jar or thrown it away for some reason, you can always transfer your olives into an airtight container (with their brine unless they are liquid-free).

Full Brine Coverage 

You should always store your black olives submerged in their own brine solution, even if you transfer them to a new container. Otherwise, they will definitely expire much faster.

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If you bought the liquid-free type, then all you have to do is keep them in an airtight container in the refrigerator and they should be fine.