Which burger does not automatically come with cheese?

The Classic Burger does not automatically come with cheese, which is why it is the correct answer. This item is designed to be a simple representation of a traditional burger, allowing guests to customize it according to their personal preferences. Customers can choose to add cheese if they desire, but it is not included by default.

In contrast, the Factory Burger, Mushroom Burger, and Americana Burger all come with cheese as part of their standard offerings. The Factory Burger typically features a blend of toppings that includes cheese, while the Mushroom Burger includes both mushrooms and cheese to complement the flavors. The Americana Burger also includes cheese, enhancing its classic appeal. Therefore, these other burgers already include cheese, distinguishing them from the Classic Burger.