Skip to Content

Avoiding Spoilage: How Long Does Peanut Oil Last?

There are tons of cooking oil available today, among which peanut oil is one of the most popular, offering a lot of health benefits.

Peanut oil is a vegetable oil made from peanuts. It is rich in vitamin E that helps fight free radicals, which may cause heart related diseases.

We say peanut oil is versatile because you can use this oil for baking, frying, or even use it to apply to the skin to relieve joint pain and body aches.

Another point to note is that when you cook with peanut oil, it doesn’t absorb the flavor of the food, and therefore they make an excellent reusable oil. Which means you can use the same batch of oil for other food items.

But what about its storage life? How long does peanut oil last? Does it ever go bad?

To find the answers to all these questions, continue reading.

Does Peanut Oil Go Bad? How Long Does Peanut Oil Last?

peanut oil shelf life

Fortunately, just like any other long lasting oil such as coconut oil, sesame oil, canola oil, etc. peanut oil has a long shelf life.

An unopened peanut oil, when stored at room temperature, will generally last for 2 years. And that is obviously under a properly stored condition.

Whereas, for an opened bottle of peanut oil, experts says that it can comfortably last for about 6 months to a year when continuously refrigerated.

However, the storage life for used peanut oil is much shorter; when stored correctly in the refrigerator, it will last you for about 2 weeks.

And according to the spruce eats, to properly store a used peanut oil you must shift them to a glass oil dispenser which is sealed tightly, doing this will maximize the storage life for a more extended period.

Also, to significantly extend the oil’s shelf life, we highly recommend to store the oil in a pantry, or a cool and dark place, and away from heat and sunlight, because the unstable temperature will quickly deteriorate the quality of the oil.

And if the bottle is nearing its expiry date, it is best to refrigerate it because doing so helps the oil to retain the freshness for an extended period.

In conclusion, peanut oil does come with quite a long shelf life, but yes, over time, it does go bad. However, a proper storage condition dramatically prolongs the longevity of the shelf life.

How to Tell if Peanut Oil is Bad? Peanut Oil Shelf Life!

Oils do go bad with age, but not in the same way the other foods deteriorate. With oil, you won’t see the visible signs such as mold or change in texture but are rather subtle.

One early warning of not so fresh peanut oil is that when you cook or fry food with an old peanut oil, it won’t taste as flavorful as you expect it to be.

Once the peanut oil starts to go bad, you will see changes in the clarity and color of the oil; it will go darker.

You will also find that it gives out an odd odor. Hence, if you begin to notice these changes, it is best to get rid of the oil.

peanut oil

Does Peanut Oil Go Bad? How Long Does Peanut Oil Last?

5 from 1 vote
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Shelf Life
Servings 1 Serving


  • Peanut oil
  • Air-tight containers
  • Labels and markers


  • Read the guide thoroughly to learn how long it lasts.
  • Check the u0026quot;Best-by-dateu0026quot; to know when it expires.
  • Make sure to store in an airtight container in a cool, dark place (pantry or fridge).
  • Always check for signs of spoilage before using.
Did you make this recipe?Mention @EatDelights or tag #eatdelights!

About The Author

Sharing is caring!

Recipe Rating