Canola oil is derived from the seeds of the canola plant, which is a variety of rapeseed. It is known for its high smoke point, neutral flavor, and heart-healthy profile, making it a popular choice for frying, baking, and salad dressings.

When stored correctly, unopened canola oil can last up to two years. It is important to keep it in a cool, dark place, away from direct sunlight and heat sources. The "best by" or "use by" date on the label serves as a guideline for optimal quality, but it doesn’t necessarily indicate when the oil becomes unsafe to consume.

Once opened, the shelf life of canola oil decreases significantly. Opened canola oil typically lasts between 6 to 12 months. This reduction in shelf life is due to exposure to oxygen, which can lead to oxidative rancidity.

Knowing how to identify spoiled canola oil is crucial for maintaining the quality of your dishes. Here are some signs that canola oil has gone bad:

Unusual Odor: Fresh canola oil has a neutral smell. If it emits an off-putting odor, such as a sour or crayon-like scent, it is likely rancid.

Color Changes: Fresh canola oil should be clear and golden. If it appears dark or cloudy, it may be spoiled.

Taste: A small taste test can help determine the oil's quality. If it tastes bitter or has an off flavor, it’s best to discard it.

Using canola oil past its expiration date is often safe, especially if it is unopened. However, if the oil has been opened, it’s essential to check for signs of spoilage before use. While consuming rancid oil is unlikely to cause serious health issues, it can affect the taste of your food and may lead to digestive discomfort.

To extend the shelf life of your canola oil, follow these storage tips:

Store in a Cool, Dark Place: Keep canola oil away from heat and light, ideally in a pantry or cupboard.

Seal Tightly: Ensure the cap is tightly sealed to minimize exposure to air.

Refrigeration: While not necessary, refrigerating opened canola oil can help maintain its freshness, especially in hot climates. However, be aware that it may solidify, which is normal and will return to liquid at room temperature.

Avoid Freezing: Freezing canola oil is not recommended, as it can alter its texture and quality.

Understanding how long canola oil lasts and how to store it properly can help you make the most of this versatile cooking oil. Unopened canola oil can last up to two years, while opened oil typically remains good for 6 to 12 months. Always check for signs of spoilage before use, and follow best storage practices to ensure your oil maintains its quality. With these tips, you can enjoy the benefits of canola oil in your cooking for as long as possible.