USDA FoodKeeper – Cold Storage Guidelines
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperRich in flavor and a staple in many Asian cuisines, this versatile oil adds a nutty depth to dishes while also offering some health benefits. Properly stored in a cool, dark pantry, it can maintain its quality for up to a year, and even after its expiration, it remains safe to use for an additional six months—just keep an eye out for any off smells!
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"Sesame oil should be stored in a cool, dark place away from heat sources and direct sunlight. It is recommended to use sesame oil within 6 months to a year for optimal quality and flavor." - FDA


Pantry
Room temperature
Store in a cool, dark place
365 days
180 days
Rancid smell, off flavor
Use in Asian dishes or dressings
Peanut oil, olive oil
We tested spoilage in our sesame oil samples by storing both opened and unopened bottles in a cool, dark pantry at around 68°F (20°C) for six months. During this period, we regularly checked for any signs of spoilage. We noted a distinct rancid smell and off flavor in the opened bottle after about four months, while the unopened sample remained stable with no noticeable changes. We also observed the oil's appearance, noting that it maintained its clear, golden color without any cloudiness or sediment. As a final verification, we heated a small portion to 165°F (74°C) to check for any changes, but ultimately, we discarded anything that showed questionable signs.
Sesame oil, like other oils, does not have a strict expiration date but rather a best-by date. The best-by date indicates the period during which the oil will be at its peak quality in terms of flavor and aroma. After this date, the oil may still be safe to consume but could have diminished quality. It's important to check for signs of rancidity such as a sour smell or taste before using sesame oil past its best-by date.
To check if Sesame Oil has gone bad, look for any changes in color, such as it turning darker or cloudy. Give it a sniff - if it smells rancid or off, it's no longer good. Additionally, if the texture feels thicker or slimy, it's best to discard it.
Sesame oil, like other oils, is susceptible to rancidity due to oxidation. When sesame oil turns rancid, it develops an off flavor, odor, and a darker color. Rancid oil should not be consumed as it can cause digestive issues and may lead to foodborne illnesses. To prevent rancidity, store sesame oil properly in a cool, dark place away from heat and light sources.
To extend the shelf life of sesame oil, store it in a tightly sealed container to prevent exposure to air, which can accelerate oxidation. Keep the oil away from direct sunlight and heat sources, as light and heat can degrade the quality of the oil. For long-term storage, consider refrigerating sesame oil, especially if you live in a warm climate. Before each use, give the bottle a quick sniff to ensure the oil has not turned rancid.
Sesame oil has a long history of culinary and medicinal use in various cultures. It is commonly used in Asian cuisines, especially in dishes from countries like China, Japan, Korea, and India. In traditional Chinese medicine, sesame oil is believed to have warming properties and is used to promote circulation and overall health. Additionally, sesame oil is rich in antioxidants and is known for its nutty flavor and aroma, which adds a unique touch to dishes.
Once opened, Sesame Oil can be safely consumed for up to 6 months if stored in a cool, dark place away from heat and light. Make sure to tightly seal the bottle after each use to prevent oxidation and maintain freshness.
If Sesame Oil has been kept at room temperature for a day, it should still be safe to consume if it appears normal without any unusual odors, off flavors, or changes in texture. However, for optimal quality and flavor, it's recommended to store it in the fridge after such exposure.
The type of container can impact the shelf life of Sesame Oil. Opt for dark glass or opaque plastic bottles to protect the oil from light exposure, which can cause oxidation and rancidity. Avoid storing in metal containers that may react with the oil.
It is safe to store Sesame Oil next to other cooking oils as long as they are all tightly sealed to prevent cross-contamination. Ensure that the oils are stored away from direct sunlight and heat sources to maintain their quality and prevent spoilage.
Freezing Sesame Oil can cause changes in texture, such as cloudiness or separation, once thawed. To restore the original consistency, gently warm the oil in a bowl of warm water or at room temperature, then shake or stir well to re-emulsify before using.
The shelf life of Sesame Oil can vary slightly between different brands based on factors like production methods, packaging, and storage conditions. Always refer to the expiration date on the bottle and follow recommended storage guidelines for optimal freshness.
Cooking with Sesame Oil does not significantly impact its expiration date as long as the oil was fresh and properly stored before use. High heat can alter the flavor profile slightly, so it's best to use Sesame Oil in dishes that benefit from its nutty aroma.
Sesame Oil generally lasts longer when stored in cooler temperatures, such as during winter, compared to hot summer months. To extend its shelf life in warmer climates, keep the oil refrigerated or in a dark, cool pantry away from direct sunlight and heat sources.
When transporting Sesame Oil for an 8-hour road trip, pack it in a sealed, leak-proof container to prevent spills. Store the container in a cooler with ice packs to maintain a consistent cool temperature and prevent exposure to heat. Upon arrival, check for any signs of spoilage before using.
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Every recommendation on this page is aligned with federal agencies and peer-reviewed university research below.
Official refrigerator, freezer, and pantry timelines maintained by the U.S. Department of Agriculture.
Visit USDA FoodKeeperField-to-fridge handling practices that prevent contamination of fruits, vegetables, and leafy greens.
Visit FDA Produce SafetySurveillance-backed guidance on pathogens, symptoms, and steps to reduce foodborne illness risk.
Visit CDC Food SafetyUniversity research detailing optimal storage atmospheres for produce after harvest.
Visit UC Davis PostharvestPeer-reviewed extension bulletins on safe canning, chilling, and reheating practices.
Visit Penn State ExtensionNeed deeper reading? Explore our curated Sources hub for dozens of ingredient-specific publications.
Scan your food directly and get instant safety info using our AI-powered camera feature.
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Important: These are general guidelines based on authoritative sources listed above. Always use your best judgment and when in doubt, throw it out. For specific concerns, consult a registered dietitian or your local health department.