Take a stock pot (a deep soup pot) and add:
2-1/2 pounds bony chicken pieces
2 celery ribs with leaves, cut into chunks
2 medium carrots, cut into chunks
2 medium onions, quartered
2 bay leaves
1/2 teaspoon dried rosemary, crushed
1/2 teaspoon dried thyme
8 to 10 whole peppercorns
2 quarts cold water
Place all ingredients in pot. Slowly bring to a boil; reduce heat. Skim foam. Cover and simmer for 2 hours.
Set chicken aside until cool enough to handle. Remove meat from bones. Discard bones; save meat for another use. Strain broth, discarding vegetables and seasonings. Refrigerate for 8 hours or overnight. Skim fat from surface.