Which of the following beverages is NOT an appetizer at Panda Express?

The correct answer is that black pepper steak is not an appetizer at Panda Express. Instead, black pepper steak is typically classified as a main dish. Appetizers are small dishes intended to be served before the main course, usually to whet the appetite.

In the context of Panda Express, both the veggie spring roll and chicken egg roll are concise, snack-sized servings that are commonly served at the start of a meal. They fit the appetizer category well because they are designed to be enjoyed in a smaller portion alongside dipping sauces. Similarly, cream cheese rangoons are also recognized as an appetizer due to their bite-sized nature and are often shared among diners as a starter.

Thus, while the other options reflect options that fit into the appetizer menu, black pepper steak is a found on the main course menu, making it the clear choice as the item that does not belong in the appetizer category.