http://www.micromatic.com/draft-keg-beer-edu/importance-beer-line-cleaning-aid-72.html <div>A brewer may take up to several months to brew, finish, and package a keg of beer. The quality and flavor of that beer can be ruined in the few seconds it takes for a beer to travel from a keg to the faucet in a draft system that has not been properly maintained. </div>