Which part of a bar cabinet is used for the storage of beverages?

The part of a bar cabinet that is primarily used for the storage of beverages is the shelf. Shelves provide an organized way to display and store various types of drinks, including spirits, liqueurs, and mixers, making them easily accessible for bartenders during service. Proper shelving allows for better visibility and arrangement, which helps in quickly retrieving needed beverages while also maintaining a tidy appearance behind the bar.

Drawers, compartments, and countertops serve different functions. Drawers are typically meant for storing bar tools, napkins, or other small items rather than beverages. Compartments can be a form of storage but are often used for specific items like glasses or utensils. Countertops are surfaces for mixing drinks and serving customers, not for storage. Therefore, the shelf is the most suitable answer for beverage storage.