Traditional Irish beef stew typically contains lamb or mutton, potatoes and root vegetables.  Irish stout is also often used in the braising liquid along with stock, which adds great depth of flavor. This version isn't completely traditional as it includes grass-fed beef (I simply prefer its flavor), and I didn't include potatoes because I'd rather serve the stew over mashed potatoes. It's totally personal preference! The glory of stew is that it is easily customized to use your favorite cut of meat (just use a tough cut that requires a long cooking time), and your favorite potatoes or root vegetables.