How long can bleu cheese be left out before it becomes unsafe?

Here's why:

* Bacteria Growth: Blue cheese, like all dairy products, is susceptible to bacterial growth, which can cause foodborne illness.

* Mold: While blue cheese is known for its mold, this is a controlled type. Other molds can grow on the cheese when left out, which can affect its safety and taste.

To ensure safety, follow these guidelines:

* Refrigerate immediately: Store blue cheese in the refrigerator at 40°F (4°C) or below.

* Keep it covered: Wrap tightly in plastic wrap or store in an airtight container.

* Discard if spoiled: If you notice any signs of spoilage, such as mold growth beyond the intended blue veins, discoloration, or an off odor, discard the cheese.

Note: This guidance applies to blue cheese that has not been opened. Once opened, it's best to consume it within 5-7 days.