http://www.micromatic.com/beer-questions/how-long-keg-beer-remain-fresh-aid-44.html All beers are at their best on the day the keg is filled ... http://www.micromatic.com/beer-questions/pasteurized-and-non-pasteurized-keg-beer-aid-45.html Most keg draft beers brewed in the U.S. are not pasteurized during ... aid-45