Food Preservation

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

In this article, you will know the answer to the query “Does Peanut Oil Go Bad? How Long Does Peanut Oil Last?“.

Peanut oil is one of the most popular cooking oils today, offering a lot of health benefits.

The oil obtained from peanuts is known as peanut oil. Moreover, it is a good source of vitamin E, which can help prevent heart disease by fighting free radicals.

As a versatile oil, peanut oil is great for baking, frying, or even applying it to the skin to relieve joint pain.

Furthermore, peanut oil doesn’t absorb the flavor of the food when cooked, so it makes an excellent reusable oil. Thus, you can use the same batch of oil for other food items as well.

How long does it last in storage? What is the shelf life of peanut oil? Are there any bad batches?

You can find all the answers to these questions by reading on.

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

The shelf life of peanut oil is similar to that of other long-lasting oils such as coconut oil, sesame oil, canola oil, etc.

Unopened peanut oil will generally last for two years when stored at room temperature. Under proper storage conditions, of course.

If continuously refrigerated, peanut oil can last for about 6 months to a year once opened.

Used peanut oil, however, has a much shorter storage life; it can last up to two weeks in the refrigerator if stored correctly.

The spruce eats suggests that you store used peanut oil in a glass oil dispenser that is sealed tightly, doing so will maximize its storage life for a longer period of time.

As well as storing the oil in a cool, dark place away from heat and sunlight will significantly extend its shelf life, since fluctuations in temperature will quickly deteriorate its quality.

It is also best to refrigerate the bottle if it is nearing its expiration date since doing so helps the oil remain fresh for longer.

The shelf life of peanut oil is quite long, however, it does go rancid over time. A proper storage condition, however, dramatically extends the shelf life.

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

While oils go bad with age, they do not deteriorate as quickly as other foods. It’s more subtle than visible signs, such as mold or a change in texture, with oil.

When you cook or fry food with old peanut oil, you won’t get the same flavor you expect. This is an early warning sign of not-so-fresh peanut oil.

It will become darker as the peanut oil starts to go bad. You will see changes in the clarity and color of the oil as it goes bad.

A strange odor will also emanate from it. The best thing to do if you notice these changes is to get rid of the oil.


In addition to all its health benefits, peanut oil is also versatile, making it a favorite cooking oil around the world.

The fact that peanut oil can be stored for a long time gives it even more appeal.

To answer the question, does peanut oil go bad?

As long as you store it properly, you can easily keep it for a couple of years before it goes bad.

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


15 minutes


15 minutes


30 minutes


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


  • Read the guide thoroughly to learn how long it lasts.
  • Check the “Best-by-date” 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 use.

If you want to read more about food preservation, read here: FOOD PRESERVATION.

Ayub Khan

Ayub Khan is an accomplished culinary author with a passion for cooking and 6 years of experience. His creative ideas and valuable tips inspire readers to explore new flavors and take their culinary skills to the next level.

Rehmat Dietitian

Rehmat is a certified food dietitian having experience of 10 years in reviewing and practicing on foods different aspects.

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button