Shelled walnuts are kept for at least half a year at room temperature and more than a year in the refrigerator. On the other hand, shelled walnuts last at least 3 months in the pantry and more than 12 months in the refrigerator. Do walnuts spoil? Yes, walnuts can spoil. As with a lot of nuts like this, they don't exactly get “bad”, but rather go rancid.
This is due to the oil found inside this type of nut. When this happens, it gives them a bitter taste and makes them inedible. Walnuts contain oil that goes rancid after a while, resulting in a bitter taste. Although walnuts stay fresh for a long time, there comes a point where they are no longer appetizing.
This occurs when storage conditions are not suitable for nuts, especially when it comes to long-term storage. How you do this depends largely on whether the nuts are shelled and whether you refrigerate them or not. So, if you shake your shelled nut and hear the walnut moving inside it, it's time to throw it away. Walnuts are among the most popular nuts today due to their excellent flavor, crunch factor and light aroma.
If you store the nuts properly, you can enjoy them whenever you want without having to worry about whether your nuts have spoiled. For people trying to maintain their weight, nuts have a good mix of fat and protein, so they don't have to rely on junk food for calories. However, possibly the most annoying thing about walnuts is that some that have left will go through these tests undetected. If you buy walnuts in a sealed package, you can store them in their original packaging in the refrigerator or freezer.
First, that date is not an expiration date, just a rough estimate of how long the nuts should last. Because they can go rancid if not stored properly, the best way to store walnuts is to buy shelled walnuts and put them in the refrigerator or even freeze them. You keep rummaging through your pockets to take out another handful of nuts and keep eating until there are no more left. If you have purchased a bag of chopped or ground nuts, it is recommended that you store it in the fridge or freezer.
However, biting a nut that has passed its prime will leave an unpleasant taste in your mouth, and it will be an experience you don't want to repeat. Sometimes the nut will look good, so you'll need to try one to see if it tastes bitter or if it's still good to eat. If you buy walnuts in bulk, either in shell or without shell, place them in an airtight container for long-term cold storage. Once you open the bag, transfer the nuts to an airtight container to maintain freshness and place them back in the refrigerator or freezer.