- The precise answer to the question ? How long does a bottle of peanut oil last once opened? depends to a large extent on storage conditions - store opened peanut oil in a cool, dark place and keep tightly covered at all times.
How long does an opened bottle of peanut oil last at normal room temperature? Opened peanut oil will usually keep for 1 year when stored in the pantry.
How can you tell if an opened bottle of peanut oil has gone bad? To determine if oil is still suitable for use, smell and taste it: If the oil has developed an off odor, flavor or appearance, it should be discarded for quality purposes.
Is an opened bottle of peanut oil safe after the Use By or Best By date? Yes: "Best By," "Best if Used By," and "Use By" dates on commercially packaged foods sold in the United States represent the manufacturer's estimate of how long the product will remain at peak quality - in most cases, the opened bottle of peanut oil will still be safe to consume after that date, as long as it has been stored properly.
Sources: For details about data sources used for food storage information, please click here