If you have leftovers or want to store them for later, there are a few things you can do to keep them fresh. First, make sure to transfer the spaghetti into an airtight container. This will help prevent air from getting in and causing the spaghetti to dry out. Next, store the container in the refrigerator. Jollibee Spaghetti can typically last for up to three days in the fridge, but it's best to consume it within two days to ensure its freshness.