Proper storage preserves nut quality. Poor storage often leads to darkening of kernels and rancidity of the oils, destroying the natural flavor and aroma of the nuts. Store pecans under refrigeration. Freezing is best. Lowering the temperature extends storage life. Nuts can be thawed and refrozen without loss of quality. Refrigerated or frozen pecans should be placed in airtight containers. Pecan kernels readily absorb odors from other foods, resulting in off flavors. Sealed plastic bags are best for storing pecans in the freezer. Pecans are usually stored shelled since they take up less space and can be conveniently used straight from the freezer. Unshelled pecans can be stored for a longer period than shelled nuts. Storing pecans at room temperature is not recommended.
Under refrigeration (40 degrees F), shelled pecans will maintain fresh quality for approximately 6 months. Inshell pecans will remain fresh for 9-12 months.
Under freezer storage at 0 degrees F, properly packaged (airtight) shelled pecans will retain quality for 2 or more years. Inshell pecans will also maintain good quality for 2 or more years if frozen.