You grabbed a whole pepperoni stick from the unrefrigerated aisle at the grocery store. Now you are home and wondering: should this go in the fridge, or is the pantry fine? Meanwhile the open bag of sliced pepperoni from last week is definitely in the fridge, but you are not sure how much longer it will last.
Does pepperoni need to be refrigerated?
The short answer: It depends on which type you have. A whole, unopened pepperoni stick does not require refrigeration before opening. It is a shelf-stable dry-cured sausage that can be stored in a cool, dry pantry for up to 6 weeks. Once opened, it must be refrigerated and used within 3 weeks per USDA FSIS. Sliced pepperoni must be refrigerated at all times, opened or not.
For more on storing deli meats and cured products, see the Food Storage Guide.
Key Takeaways
Whole stick, unopened: no refrigeration needed; cool dry pantry up to 6 weeks
Whole stick, after opening: must refrigerate; use within 3 weeks
Shelf-stable sliced bags (Hormel, Signature, aisle shelf): no refrigeration before opening; refrigerate after and use within 21 days
Refrigerated-section sliced pepperoni: always refrigerate; use within 7 days of opening
Deli-counter sliced: always refrigerate; use within 3 to 5 days
Left out more than 2 hours after opening: discard (sliced) or refrigerate promptly (whole stick)
Does a Whole Pepperoni Stick Need to Be Refrigerated?
No, not before opening. A whole, intact pepperoni stick is a shelf-stable dry-cured sausage. The USDA FSIS defines dry sausages as products preserved by fermentation, curing agents including nitrates, and drying to a specific moisture level that prevents bacteria from growing at room temperature. An unopened whole pepperoni stick can be stored in a cool, dry pantry for up to 6 weeks without any refrigeration. This is why you find whole sticks hanging on unrefrigerated shelves at grocery stores and gas stations.
Refrigerating an unopened whole stick extends its life further. Kept cold continuously, an unopened whole stick can last indefinitely per USDA guidance, though quality is best within 6 months before the fat starts turning rancid.
Once you cut or open the stick, that changes. The cut end is now exposed to air and bacteria. The USDA FSIS says to refrigerate opened hard or dry sausage and use within 3 weeks. Wrap the cut end tightly in plastic wrap or place in an airtight bag and store in the main body of the fridge, not the door.
Does Shelf-Stable Sliced Pepperoni (Aisle Bags) Need to Be Refrigerated?
Not before opening. Vacuum-sealed bags of sliced pepperoni sold on unrefrigerated grocery shelves (the pizza aisle, snack aisle, or charcuterie section) are shelf-stable products. Brands like Hormel and Signature sell these in the aisles precisely because the vacuum seal replicates the protection of an intact casing, keeping oxygen and bacteria out. No refrigeration required until you break the seal.
Once opened: refrigerate immediately and use within 21 days, per Horm
