When it comes to shelled pecans, in addition to visual cues such as mold or any other organic growth, you should use your nose and taste. If the nuts smell stale or like used cooking oil, they are stale. The same thing if they have developed a bitter or stale taste. To find out if your shelled pecans are damaged, you'll need to open them.
If they look dry or there is a network formation, they are gone. The first sign of a spoiled nut is a soft or moldy appearance. Its shell will crack or fade, and its interior will be empty. Also, it would help if you were watching for signs of mold and lint.
If it's hard to peel, it's probably spoiled. If the inside is soft or lint-free, you should discard it. You know that walnuts are stale when they start to taste strong and bitter. Sometimes, they also develop a strange smell that may remind you of old paint, nail polish remover, or something like that.
Things are different with shelled pecans. You never know if they're good or not until you open them. All you can do is shake them to see if they sound or not. If pecans feel light and empty, discard them, as they are most likely dry or spoiled.
Another sign that pecans are bad, even if they look and feel fresh, is that walnuts develop a strong bitter or sour taste. When the oil in a nut goes rancid, it turns bitter and seeps into the rest of the nut, causing it to taste horrible, which means that any nut with a bitter taste has gone bad. How do you know if shelled pecans are bad? Stale pecans often develop a bitter, unpleasant taste; if pecans develop a bad smell or taste, or if mold appears, they should be discarded. When stored in a freezer, pecans can easily last up to two years, and pecans in shell can last five years in the freezer as long as you handle them with care.
You can easily get a few years out of pecans as long as you store them properly in a cold, dark, dry environment where they don't go rancid. In such cases, it's important to store pecans properly to prolong their shelf life and maintain their best quality.
Shelled pecansare more likely to go rancid and are more likely to absorb flavors and odors from other foods in the refrigerator. Pecans, shelled or shelled, have certain clear indicators that convey that they are bad.
It's not understood why this happens, but if you're looking to store pecans for the long term and buy shelled pecans, you should focus on freezing them instead of refrigerating them, as they last much longer that way. If you intend to freeze or refrigerate pecans, try storing them away from open shelves or lights, such as on a vegetable tray. There are a variety of physical clues that can tell you if a container of pecans has gone bad, all of which you should know if you are preserving pecans for the long term. Some people recommend discarding pecans with holes in the shell, but I think it's best to open them and find out what's inside.
At 70 degrees, pecans can be stored for a few months; in the refrigerator for about 18 months, and at 0 degrees, they can be stored for 2 years or more. Store pecans can be peeled or shelled, and the shelf life of the two types is slightly different. Freezing pecans incorrectly can damage walnuts, causing them to spoil faster than if they were left out, so you should know the best way to freeze pecans.