As a sommelier and brewer, I have had the pleasure of working with kegs and understanding the different types of beverages that are typically stored in them. Kegs are primarily used to hold beer that has completed the fermentation process and is ready to be consumed. However, it's important to note that not all beers are suitable for kegging.
One of the most common types of beer found in kegs is fizzy lager. This type of beer has undergone a process known as carbonation, where carbon dioxide is added to create bubbles and give it that refreshing, effervescent quality. Fizzy lagers are usually filtered to remove any remaining sediment or yeast, resulting in a clear and crisp beer. Additionally, these beers are often pasteurized to extend their shelf life and maintain their quality over time.
Kegs are also used to store other carbonated beverages such as cider, sparkling wine, and even cocktails. Similar to fizzy lagers, these drinks undergo carbonation to create the desired level of fizziness. Ciders, for example, can be kegged to maintain their natural apple flavors and carbonation levels. Sparkling wines, on the other hand, may be kegged to preserve their delicate bubbles and effervescence.
It's worth mentioning that not all beers are suitable for kegging. Some beers, such as traditional cask ales, are typically served from casks or barrels rather than kegs. Cask ales are unfiltered and unpasteurized, allowing them to retain their natural yeast and develop complex flavors over time. These beers are often served at cellar temperature, which is slightly warmer than the typical serving temperature for kegged beers.
In my experience, working with kegs has been both practical and efficient. The pressurized nature of kegs allows for easy dispensing and serving, particularly in commercial settings such as bars and restaurants. Kegs also offer the advantage of being easily transportable and stackable, making them convenient for events and gatherings.
To summarize, kegs primarily hold beers that have completed fermentation and are ready to drink. These beers are often filtered and pasteurized to ensure clarity, stability, and extended shelf life. Fizzy lagers, ciders, sparkling wines, and even cocktails are commonly stored in kegs due to their carbonation. However, it's important to note that not all beers are suitable for kegging, as some styles are better suited for casks or barrels.