All beers have carbonation to some extent, whether it be a bubbly, often gassy, lager, or a smooth but still slightly fizzy ale or stout. Where some beers differ is whether the carbonation is a natural process or forced.

Have you ever poured a beer or been drinking from a bottle and noticed a cloudy layer of white stuff in the bottom of the bottle? There are some odd theories floating around about that stuff, and most of them aren't true. Here's the real story.