What cheese is not considered a blue cheese?

The answer is: Almost all cheese is not considered a blue cheese.

Here's why:

* Blue cheese is a specific type of cheese that gets its distinct blue-green veins and pungent flavor from the growth of *Penicillium Roqueforti* mold.

* Most other cheeses do not have this mold intentionally added to them. This includes cheddar, mozzarella, brie, Swiss, and countless others.

So, while there are many types of cheese, only a few are classified as blue cheese.