Final answer:
The shelf life of subrolls is typically 5 to 7 days at room temperature if they contain preservatives, or 2 to 3 days if they do not. They can last up to 10 days if refrigerated or 2 to 3 months if frozen but always check for spoilage before consumption.
Step-by-step explanation:
The shelf life of sub rolls, like most bakery products, can vary based on a number of factors such as the ingredients used, the presence of preservatives, and the storage conditions. Typically, commercially produced sub-rolls that contain preservatives can have a shelf life of approximately 5 to 7 days when stored at room temperature in a pantry or bread box.
Without preservatives, or if they are homemade, sub rolls may last for a shorter period, often 2 to 3 days at room temperature. To extend the freshness of sub rolls, you can refrigerate them for up to 10 days or freeze them for 2 to 3 months. However, always check for signs of spoilage such as mold or an off odor before consuming, as these are indications that the bread is no longer safe to eat.