Sesame Oil Shelf Life: How Long Does Sesame Oil Last?

Sesame oil is a common ingredient used in many Asian dishes. Not only does it add flavor and depth to your cooking, but it also has several health benefits. However, like any other food item, sesame oil has a shelf life, and proper storage is crucial to maintain its quality. In this article, we will discuss what sesame oil is, its shelf life, how to store it properly, and what to do with expired sesame oil.

What is Sesame Oil?

Sesame oil is a popular vegetable oil that is extracted from sesame seeds. It has a nutty and fragrant aroma, and it’s commonly used in various types of cooking.

Types of Sesame Oil

  • Unrefined: Also known as “raw” sesame oil, unrefined sesame oil has a darker color and stronger flavor. This type of oil is typically used in dressings or marinades and should not be heated to high temperatures.
  • Refined: This type of sesame oil goes through processing like bleaching, filtration, etc which results in a lighter colour with neutral taste making it suitable for all form of cooking at high temperature.
  • Toasted: Toasted sesame oil has a distinctive amber color and rich aroma because the seeds are roasted before being pressed. This type of sesame oil provides depth to savoury dishes like stir-fries or soups.

Culinary uses of Sesame Oil

  • Cooking: Sesame Oil can be used as an ideal substitute to other vegetable/sunflower oils to add flavour into stir fries or quick pan fried meals.. Its low smoke point makes it unsuitable for deep frying but it can used in moderate heat sauteing. Being naturally antibacterial helps avoid bacterial growth & thus increases the shelf-life compared to other unsaturated fat based oils.
  • Dips & Sauces: The bold flavour profile adds zing lifting up plain mayonnaise, salad dressings, simple pasta sauces without needing many ingredients. Argetsfiner sauce (A combination tahini paste made from pureed toasted sesame seed+ lemon juice+ water+ garlic) is a classic example of how versatile the sesame oil can be.
  • Baked dishes: Sesame oil also lends itself well for use in baking, specially in cookies & muffins where it can replace butter/oil to add nutty flavour as well as lending moistness.

Sesame Oil Shelf Life

When it comes to sesame oil, its shelf life depends on various factors that can influence its deterioration over time. Here are some points to keep in mind:

Factors That Affect the Shelf Life of Sesame Oil

  • Packaging: The quality and durability of the bottle you use play a crucial role in maintaining sesame oil’s quality.
  • Storage Conditions: Direct sunlight, heat, humidity and air exposure accelerate oxidation process leading to development rancidity which can change sesame oil flavor and aroma.
  • Cold-pressed vs. regular version: Cold-pressed sesame oil lasts longer as they have less impurities than the dark colored roasted variety since their production undergoes a different process where the seed is not heated.
  • Natural Antioxidants Content: Sesame seeds contain anti-oxidants like sesamin that act as natural anti-bacterial agents that protect against spoilage.

How Long Does Sesame Oil Last?

The shelf life of sesame oil varies depending on how well it was produced and packaged, storage conditions, and whether or not it has artificial preservatives added to increase its lifespan. Unopened bottles of sesame oil usually last for about a year to two years when stored properly in a cool dry place away from sunlight. Opened bottles generally last up to six months with freshness declining after three or four months if improperly stored in direct sunlight or warm temperatures. Some sources suggest storing opened bottles in fridge may augumenting their lifespan upto one year. However, keep an eye out for any signs of spoilage before using past storing timeframes described above..

Signs of Spoilage in Sesame Oil

  • Aroma and Flavor: If the oil smells or tastes off, rancid, or has an unpleasant odor. It may have been exposed to air, sunlight or dissapated its natural anti-bacterial compounds that protect quality.
  • Appearance: Sesame oil should be clear with a golden hue; if you see it becomes cloudy or sedimentation appears at the bottom repeated filtering can help improve qualities for some time, filter it before use.
  • Bottle condition: if the bottle is bloated due to oxidation where gas forms inside because bacteria grown. Any size of bloating indicate spoiling and it should be discarded immediately.

In conclusion, proper storage and packaging are instrumental in sesame oil’s longevity. Incorporating these factors mentioned here will keep your sesame oil good for cooking longer while preserving nutritional value for healthy meals cooked at home.

How to Store Sesame Oil Properly

If you want to ensure that your sesame oil lasts as long as possible, it’s important to store it properly. Here are some tips:

Best storage containers for sesame oil

  • Dark-colored glass bottles or stainless steel containers are the best options for storing sesame oil. They both help protect the oil from light and prevent oxidation.
  • Avoid storing sesame oil in plastic containers or clear glass, which can allow light to penetrate and degrade the quality of the oil.

Storage tips for prolonging sesame oil’s shelf life

  • Store your sesame oil in a cool, dry place, away from direct sunlight and heat sources like stovetops or ovens. This will help prevent the oil from going rancid.
  • Make sure to tightly seal the container after each use to keep air out and minimize exposure to moisture.
  • You can also add a nitrogen gas flush into your container when sealing, pushing out any remaining Oxygen which would eventually cause oxidative rancidity over time.

Can you freeze sesame oil?

Sesame oil technically doesn’t need freezing since it has a very long shelf life on its own if stored properly. However If you still want to freeze it, bear in mind that refrigeration is preferable as freezing expands and may cause damage especially In Glass jars although sccessible with metallic sealed bottles. If you must freeze make sure, to remove what you need before thawing/preparing in order not introduce moisture, water content causes oxidation or malodor. Place any remaining unused portion right back in deep freezer maybe favorable, while Sealed preferred for longer shelf stability up to 4 months at -20°C (-4°F)

Using Expired Sesame Oil

Sesame oil is a popular ingredient in many dishes, especially in Asian cuisine. However, when sesame oil expires, it can pose a risk to your health if used improperly. Here are some things you need to know about using expired sesame oil:

Risks of using expired sesame oil

  • Expired sesame oil may taste rancid and develop an unpleasant odor.
  • Using rancid or spoiled oils can increase the risk of foodborne illness.
  • Consuming rancid oils can lead to oxidative stress and inflammation in the body.

How to tell if sesame oil has gone bad

While most brands have an expiration date printed on the bottle, this isn’t always accurate. Here are some signs that your sesame oil has gone bad:

  • A sour, musty or nasty smell
  • An unpleasant taste
  • The appearance becomes cloudy or murky instead of clear and golden/brown
  • The color changes into a darker brown The flavor is not as strong as before Creative ways to use old sesame oil

    If you have expired sesame oil but don’t want to throw it away immediately, consider these creative ways:

    1. Use it for non-food purposes such as lubricating hinges or removing sticky residue Mix with other cooking oils (that have not expired) to dilute the flavour and taste Use it in small amounts for seasoning dishes if you like its flavor, Or as a finishing oil.

      by mixing with other ingredients like vinegar or soy sauce note that depending how open to air has been it might have gone rancid.

    Remember, consuming expired sesame oil can pose health risks. If you’re unsure whether your sesame oil has gone bad, it’s best to err on the side of caution and dispose of it properly.


    In conclusion, if you want to enjoy the rich aroma and taste of sesame oil for longer periods, you need to be mindful of its storage requirements. Always keep it away from direct heat and light sources and inspect it regularly for signs of spoilage before use. By following these simple tips and tricks, you can make the most out of your sesame oil while keeping yourself safe from any harmful effects that may arise from using rancid or spoiled oils.


    How long does sesame oil last once opened?

    Sesame oil lasts up to six months after being opened if stored correctly in a cool dark place.

    What are some ways I can tell if my sesame oil has gone bad?

    If you notice an off smell or color change in your sesame seed oil bottle or experience changes in taste post consumption; then it’s time for disposing of the bottle.

    Can I still consume expired sesame oil?

    Consuming expired oils doesn’t have immediate adverse effects; however they may lead to digestive problems so it’s recommended not use the products after expiration date.

    How should I store unopened bottles of Sesame Oil?

    Store unopened bottles at room temperature at dry place covered away from direct sunlight which limits the exposure period allowing them stay fresh for as long as possible within defined expiration dates mentioned on packaging

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