A Big Beverage Server is a job that involves serving large amounts of beverages to customers. The job requires the use of an URN, which is a three-letter acronym for a large metal container used to heat and store liquids. The Big Beverage Server must be able to handle large amounts of beverages and serve them quickly and efficiently. They must also be knowledgeable about the different types of beverages they are serving and be able to answer any questions customers may have.