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Once a hard, dry sausage is opened, it can be stored in the refrigerator for three weeks. Semi-dry sausages like summer sausage can be stored in the refrigerator unopened for three weeks. Once opened, they can be stored in the refrigerator for an additional three weeks. All sausages can be stored in the freezer for up to two months.
Properly stored, cooked Italian sausages will last for 3 to 4 days in the refrigerator. To further extend the shelf life of cooked Italian sausages, freeze them; freeze in covered airtight containers or heavy-duty freezer bags, or wrap tightly with heavy-duty aluminum foil or freezer wrap.