Irish stew has become synonymous with Ireland, but it's often confused with beef stew. While there are some similarities between them, the big difference is the meat that’s used.
Traditional Irish stew has lamb or mutton rather than beef for its meat. It’s also believed that Irish stew should solely be made with stock, meat, potatoes, onions, and parsley.
Beef stew typically has more vegetables, including carrots and celery, and uses tomato paste, beef broth, and red wine or stout beer. It also uses rosemary rather than parsley.