Nuts spoil once the oils they contain go rancid. The time varies a bit depending on the type of nut, but all can be eaten after the best date. The time varies slightly depending on the type of nut, but they can all be eaten after the expiration date that is printed on the package. Most shelled walnuts retain their quality for about 4 to 6 months at room temperature.
Walnuts in shell are kept for a couple more months, about 6 to 9 months. If you choose to refrigerate your nuts, extend that period by 50 to 100 percent. Freeze walnuts if you need even more time. With their high amount of plant-based oil, pecans also last longer at lower temperatures, preventing fats from spoiling.
If properly stored, shelled pecans can last up to six months, while shelled or shelled pecans can last up to nine to 12 months. Try to save some refrigerator space for pecans, as both shelled and shelled varieties last longer and retain more of their flavor when stored in a cold environment. Walnuts expire and become rancid after a certain time. How long they last depends on the type of nut, when they were picked, if they are still in the shell and how they have been stored.
Shelf life can be extended with proper handling and storage. With the delicious flavor, the most antioxidants, and the lowest net carbs per serving of any nut, pecans aren't just an ingredient for holiday cooking and baking. When I think of walnuts, I remember the walnuts that my father and I collected in the woods as a child. Pre-packaged walnuts have a date printed on the package when they are best, but that doesn't mean they're definitely in poor condition after that date.
If they seem a little darker than normal, a flavor should tell the story, as nuts that have been spoiled have a very strong, unmistakable and unpleasant flavor. In short, if you store pecans in shell, they will be fine for a long time, even if the storage conditions you provide are far from perfect. Wild almonds, thorny water lily, water chestnuts, acorns and pistachios have been found in Israel for 780,000 years; tools called “walnut stones” were discovered in the United States and Europe dating from 4,000 to 8,000 years ago; pecans along with human remains were discovered in Texas archaeological sites of 6100 B. Shelled pecans last 6 to 12 months in the pantry (ILP), 18 months in the refrigerator and two to four years in the freezer (GPF).
Shelled pecans maintain quality for approximately two months in the pantry (GPF), nine months in the fridge and up to two years frozen (ILP). Most sources suggest refrigerating or freezing as the best storage options, but leaving pecans at room temperature is also an option. If you plan to eat pecans, you may be curious about their shelf life and best practices for storing them. If you choose to buy shelled walnuts, look for nuts that feel heavy relative to their size, don't have cracks or damage to their shells, and don't move when you shake them.
Depending on how well you store them and whether they still have their shells, pecans can last a long time. Plastic bags, glass jars, reusable cans, and other air-blocking containers are great options for pecan storage. Keep in mind that stale pecans aren't necessarily unsafe to eat, but their nutritional value may decrease slightly. If you have opened the package, transfer pecans to freezer bags or airtight containers before storing them in the refrigerator or freezer.