What does the term "86" refer to in a restaurant setting?

The term "86" in a restaurant setting specifically indicates that an item is no longer available, either due to running out of stock or being permanently removed from the menu. It serves as a communication tool among staff to inform that a certain dish or drink cannot be served to customers at that time. This term is crucial for maintaining efficient operations, as it helps staff avoid frustrating customers by ensuring they don't take orders for items that can't be fulfilled. Understanding this terminology is essential for anyone training in the food and beverage industry, as it enhances the communication flow and service efficiency.