The primary ingredient of traditional Irish stew is lamb or mutton. This hearty dish typically includes chunks of meat cooked with root vegetables such as potatoes, carrots, and onions in a flavorful broth. The use of lamb or mutton provides a rich flavor that is enhanced through slow cooking, allowing the meats to become tender and the flavors to meld. This stew is often associated with rustic Irish cuisine, and its warmth makes it a comforting meal, especially during colder months. It exemplifies traditional cooking techniques that emphasize simplicity and wholesome ingredients.