Pepperoni is cured meat, which means it contains nitrates and salt. It is because of this reason that unopened pepperoni doesn't always need to be refrigerated (unless the label suggests that you do). When kept at room temperature, an unopened pepperoni package has a shelf life of about a month.
Is pepperoni good if not refrigerated?
The sticks usually come either wrapped or in a natural casing. Either way, since the meat is cured and has some preservatives such as salt and nitrates added, it doesn't require refrigeration. ... Pepperoni technically doesn't require refrigeration, it retains freshness for longer when you keep it in the refrigerator.
Can you keep pepperoni at room temperature?
Unrefrigerated pepperoni sticks are shelf-stable and can stay at room temperature as long as it is unopened. Keep it at a cool, dry place such as your pantry or kitchen cabinet. Refrigerated pepperoni sticks are perishable. Hence, it requires refrigeration all the time.