This document provides an overview of up-selling skills for food and beverage servers. It defines up-selling as a technique to increase revenue without increasing the number of customers by persuading customers to purchase higher-priced items. It distinguishes up-selling from cross-selling and suggestive selling. The document outlines when and how to professionally up-sell customers using their psychology and the server's product knowledge. It emphasizes building trust with customers and focusing on their needs over monetary goals to achieve successful long-term up-selling.