Shelf Life Tips
- How long does an unopened bottle of walnut oil last? The precise answer depends to a large extent on storage conditions -to maximize shelf life, store in a cool, dark area.
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How long does an unopened bottle of walnut oil last at room temperature? Properly stored, an unopened bottle of walnut oil will generally stay at best quality for about 1 year.
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Should you refrigerate walnut oil? Refrigeration is recommended in very hot, humid conditions.
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How long does an unopened bottle of walnut oil last in the refrigerator? Properly stored, an unopened bottle of walnut oil will generally stay at best quality for about 1 year in the refrigerator.
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Refrigeration may cause the walnut oil to become cloudy and solidify, but this will not affect the quality or flavor — once the oil is brought back to room temperature, it will return to its normal consistency and color.
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Is unopened walnut oil safe to use after the expiration date on the bottle? Yes, provided it is properly stored and the bottle is undamaged - commercially bottled walnut oil will typically carry a “Best By," "Best if Used By," Best Before, or "Best When Used By" date but this is not a safety date, it is the manufacturer's estimate of how long the walnut oil will remain at peak quality.
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Storage time shown is for best quality only - after that, the walnut oil's texture, color or flavor may change, but in most cases, it will still be safe to consume if it has been stored properly, the bottle is undamaged, and there are no signs of spoilage (see below).
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How can you tell if walnut oil is bad or spoiled? The best way is to smell and look at the walnut oil: if the oil develops an off odor, flavor or appearance, it should be discarded.
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Sources: For details about data sources used for food storage information, please click here
