Fortified beer is a type of beer that has had additional alcohol added to it, typically in the form of distilled spirits. This process increases the overall alcohol content, making it stronger than regular beer. Fortified beers often have a richer flavor profile and can be enjoyed in smaller quantities. Common examples of fortified beers include styles like barleywine and imperial stout, which may be enhanced with spirits such as brandy or whiskey. These beverages are usually served in smaller glasses and can be paired with desserts or enjoyed on their own for a unique tasting experience.