As we step up to the bar just about anywhere in the country, there are three immediate options available to us with barely a consideration as to actual types of beer: draft, bottle, or can? The former two fuel an age old debate amongst homebrewers, much less the typical beer drinker.
While each container has its benefits there are definite detriments that make the lowly canned beer inferior — though not altogether undesirable — in multiple ways. The benefits of canned beer, outside of mere convenience, are far less obvious than those of bottling or kegging. Canned beer, stored properly, remains fresh pretty much indefinitely. Given, the beer acquires certain off flavors from the container over time. Regardless, the beer never truly goes bad in a can. For large beer makers canning is convenient and cheap. For the consumer, canned beer is convenient, cheap and far more portable than bottled beer.
However, getting past the taste of the aluminum container in your beer isn’t all that easy outside of making the beer and the container itself very cold. Ever wonder why Coors Light commercials practically beat you over the head with an emphasis on temperature? The coldest tasting beer, right? Cold service temperatures hide off flavors. Hell, they hide most flavors.
Case in point: Guinness distributors in America over the past ten years have essentially phased out proper service of stouts by telling bar owners that kegs of Guinness can be stored in the cooler with the rest of their kegs for the sake of convenience. Mostly they do this just to get bar owners to serve Guinness. Couple this with the fact that Guinness, tapped properly, uses a nitrogen tap — creating a nice head but inhibiting taste — and the result is an excellent mouth feel but a beer that you can’t actually taste…at least until the stout warms up to about 44 degrees Fahrenheit.
So we’re left with bottles and draft kegs — don’t count the gimmicky Heineken mini keg; it’s still aluminum. So what’s the difference between bottles and stainless steel kegs? Age, for one. Stainless steel kegs don’t usually get aged for very long. While airtight and perfectly capable of storing beers for years, more often than not, the contents of kegs are consumed quickly and replaced. Thus, the beer is fresh and hasn’t had time to take on any characters other than those intended by the brewer. Stainless steel also doesn’t impart any off flavors like aluminum does.
Beer, under most circumstances and within certain limits, does improve with an amount of aging. Draft beers served in bars usually don’t have the time to develop these improvements as the beers’ primary flavors mellow and subtler undertones rise to the surface. Nine out of ten beers poured from a bar keg taste exactly alike. A homebrewer’s keg, on the other hand, stored properly but tapped less often over a greater period of time has the chance to develop. The last pint pulled often achieves a grand superiority over the first.
Bottled beers develop in individual ways and much more slowly, though without taking on the characteristics of the glass. Each bottle becomes a completely different entity from the ones filled just before or just after it. If the bottle is corked rather than Crown capped, the process speeds up. Slow oxidization is the basic cause. The rumor that the color of the glass has an effect on the flavor of the beer is actually somewhat true.
Ultraviolet light, rather than heat, is the main factor in bottled beers developing off flavors. Thus, a clear bottled or green bottled beer is more likely to give off that nasty skunk whiff that anyone who has drunk an old, improperly stored Heineken is familiar with.
Outside of bottle color, sealing method is also a large factor in the flavor of the drink in question. Debate rages amongst wine enthusiasts over the ranging, various virtues and inferiorities of the synthetic cork, the traditional cork, and the screw cap. A real cork allows what it is sealing up the chance to breathe, even very slowly and minutely and thus to change over time. A synthetic cork hasn’t been proven to do the same thing, even if it does conserve traditional cork. And obviously a screw cap doesn’t breathe at all if it’s sealed correctly, but way too much if it isn’t.
Even using a crown cap, that creates an airtight seal between the beer and the outside world, beer changes in the bottle over time. A beer with a high alcohol content and alpha acid level will age gracefully over a certain period of time.
Regardless of what it’s stored in, beer changes over time. Before making an argument for a particular brand of beer over another, think about the kind of beer it is at the same time that you decide what it should be stored in and how cold it ought to be.