What is the primary purpose of keg cleaning?

The primary purpose of keg cleaning is to prevent a buildup of yeast and other contaminants. Regular cleaning ensures that any residual beer, yeast, or microbes do not spoil the next batch of beer dispensed from the keg. This is critical for maintaining the integrity of the beer's taste, aroma, and overall quality. If kegs are not properly sanitized, contaminants can lead to off-flavors or spoilage, which detracts from the beer-drinking experience and can negatively affect the brewer's reputation.

While aspects like improving aroma, changing flavor profiles, or enhancing carbonation might tangentially relate to keg management, they do not represent the main focus of the cleaning process. The essential function of cleaning is to ensure that the equipment remains free from harmful residues, enabling consistent flavor and quality for customers.