Sesame oil, cherished for its nutty flavor and high smoke point, is a must-have in the arsenal of any grilling fan. So, how long does sesame oil last? Generally, sesame oil, if unopened, stays fresh for about 12 to 18 months. However, once opened, shelf life decreases considerably to around six to twelve months. Extending the life of your sesame oil begins with proper storage of its unopened and opened bottles.

Proper Storage Techniques
Proper storage plays a critical role in prolonging the life of sesame oil. To ensure it lasts as long as possible, keep the bottle in a cool, dark place. A pantry or a cupboard away from direct sunlight and heat sources is ideal. Exposure to light and heat accelerates the degradation of oils, resulting in a loss of flavor and quality over time.
Temperature Matters
Temperature is a key factor in the oil's longevity. To preserve its rich flavor and aroma, store sesame oil at room temperature. However, if you live in a particularly warm climate, consider refrigerating the oil. While refrigeration could cause the oil to become cloudy and solidify slightly, rest assured this will not affect the quality or taste once it returns to room temperature.
Signs of Spoiled Sesame Oil
Knowing how to identify when sesame oil has turned is crucial. Spoiled sesame oil will often emit a sour or rancid odor, distinct from its typical nutty fragrance. Furthermore, any noticeable changes in its color or consistency, such as cloudiness or separation, may indicate spoilage.
Using Sesame Oil in Grilling
For barbecue enthusiasts, sesame oil can be a fantastic addition to marinades and sauces. Its nutty undertones add depth to grilled meat and vegetables. But how do you know when it's safe or best to replace the oil? A taste test can be the final determinant. A slightly off flavor is a sure sign that the oil has gone bad and should be replaced for safety and taste purposes.
Utilizing Oil Substitutes
Consider alternatives if you find yourself out of sesame oil. Oils like olive or avocado can serve as an able replacement. For specific cooking tips and recipes, you might want to check some ideas on this link.
Extra Tips for Barbecue Enthusiasts
Experiment with different oils to discover diverse flavors for your barbecue. If you love making flavored mayos for your grilled meats, you might consider using homemade versions. Check how to do this here.

Maximizing Oil Life
To maximize the life of your oils, including sesame oil, always ensure you re-cap the bottle tightly after use to prevent air and moisture from getting inside. Keep an eye on the expiration date as well.
FAQ
How can I tell when sesame oil is bad?
Check for changes in smell, color, or taste. Rancid oil will have a sour, unpleasant odor and altered appearance.
Where should sesame oil be stored?
Store in a cool, dark place like a pantry. For warmer climates, refrigeration can help preserve the oil longer.
Can I use other oils if sesame oil is unavailable?
Yes, olive and avocado oil can be great substitutes when sesame oil isn't available. They also work well on the grill.
For some more creative ways to use sesame oil and alternative backups, you can visit WikiHow's guide.