The term 'PUB INVENTORY' refers to the stock of alcoholic beverages that a pub or bar keeps on hand. This inventory typically includes ales (ALEs) and kegs (KEGs). Ales are a type of beer brewed with top-fermenting yeast, while kegs are large metal containers used to store and transport beer. Both ales and kegs are essential components of a pub's inventory, as they are the most popular types of alcoholic beverages served in pubs.