Cranberry sauce is a high-acid food, which means it has a natural preservative effect that helps prevent the growth of bacteria and mold. This is why it can last for a relatively long time in the fridge, compared to other types of food. But, how long exactly?
The answer depends on various factors, such as the storage conditions, the quality of the sauce, and how well it's sealed in the fridge. If you store it in an airtight container at a consistent refrigerator temperature, it can last for up to 2 weeks. That's a pretty decent amount of time, if you ask me!