Barley, water, hops and yeast might not sound like a recipe for success, but to the beer connoisseur, the fine balance of those four ingredients is the stuff of legend. If you've ever been to a specialty beer store, the variety can seem infinite, but there are really just two main varieties -- lager and ale. With everyone from home enthusiasts to industry giants continuing to push the limits of flavour development and production technology, beer is more than just a refreshing beverage. It's the world's greatest science project.
