Irish stew is u003cstrongu003etraditionally lamb or muttonu003c/strongu003e meat cooked in a broth with u003cstrongu003eonions, parsley and root veggiesu003c/strongu003e like potatoes and sometimes carrots. Traditionally there is u003cemu003eno beefu003c/emu003e in Irish stew, however, beef is used more commonly now as it’s commercially much more available in the US and UK.