- How long does an unopened package of French salad dressing last? The precise answer depends to a large extent on storage conditions -to maximize shelf life, store in a cool, dry area.
How long does an unopened package of French salad dressing last at room temperature? Properly stored, an unopened package of French salad dressing will generally stay at best quality for about 12 to 18 months.
Is unopened French salad dressing safe to use after the expiration date on the package? Yes, provided it is properly stored and the package is undamaged - commercially packaged French salad dressing 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 French salad dressing will remain at peak quality.
Storage time shown is for best quality only - after that, the French salad dressing'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 package is undamaged, and there are no signs of spoilage (see below).
How can you tell if French salad dressing is bad or spoiled? The best way is to smell and look at the French salad dressing: if the salad dressing develops an off odor, flavor or appearance, or if mold appears, it should be discarded.
Sources: For details about data sources used for food storage information, please click here