03Cover and cook, skimming broth from time to time, until the beef is tender, about 1 1/2 hours. Add the onions and carrots and simmer, covered, for 10 minutes. Add the potatoes and simmer until vegetables are tender, about 30 minutes more. Add broth or water if the stew is dry. Season with salt and pepper to taste. Ladle among 4 bowls and serve.