In a 4- to 5-quart pan over high heat, stir 1 pound ground lean lamb, 1 cup chopped onion, and 1 cup chopped carrots until lamb is well browned, 8 to 10 minutes. Spoon off and discard any fat. Add 1 1/3 cups grain mix (see note below), 5 1/2 cups fat-skimmed beef broth, and 1 cup dry sherry. Bring to a boil, cover, reduce heat, and simmer until grains are tender to bite, about 12 minutes. Stir in 1/4 cup chopped parsley.