On its face, choosing a beer seems like a pretty simple proposition. And It would be, save for the fact that this liquid is one of the most fragile of all packaged products, vulnerable to time, heat, light and other forces. The single biggest factor in making sure you have great beer in your glass is getting it reasonably fresh.
A single element might seem an odd choice as a theme for a beer article, but this one is truly special. Of all the things in the universe our noses are capable of smelling, sulfur compounds are by far the stinkiest. Because of its importance in a host of biochemical processes, quite a few volatile sulfur compounds are found in beer. Many of them are detectable in astonishingly small quantities.