Spring Lamb and Fava Bean Soup

In a small bowl combine parsley, lemon zest, and garlic.

Preheat oven to 450 degrees F. Place soup bones in a large shallow roasting pan. Roast about 45 minutes or until browned, turning once. Place soup bones in a 6-quarter slow cooker. Pour the 1 cup water into roasting pan and scrape up browned bits; add water mixture to slow cooker. Add the remaining ingredients. Cover and cook on low 10 to 12 hours.

Remove soup bones from broth. Scoop out as many vegetables as you can with a slotted spoon. Strain broth through four layers of 100-percent-cotton cheesecloth placed in a colander. Discard vegetables and seasonings.

If using the broth while hot, skim fat. Or chill broth in a bowl at least 6 hours; lift off fat with a spoon. Place broth in airtight containers. Cover and chill up to 3 days or freeze up to 6 months.

If desired, when bones are cool enough to handle, remove meat. Chop meat; discard bones. Place meat in airtight container for another use. Cover and chill up to 3 days or freeze up to 3 months.