A tapped keg won't match the shelf lives of bottled and canned beers, but on the other hand, it won't go flat as quickly as bottles and cans do once you open them. In fact, a single keg can last ...

For starters, a keg's life is actually measured from the date that it's filled, not necessarily when it's tapped. How long it lasts also depends on what kind of beer it holds, how you're storing ...