Notes: If making up to 2 days ahead, cover and chill broth and meats separately. Or save giblets to make gravy and use chicken broth for dressing.
1. Reserve turkey liver for other uses. In a 5- to 6-quart pan, combine turkey neck, gizzard, and heart with chicken breast, celery, carrot, onion, parsley, bay leaf, peppercorns, cloves, vinegar, and 6 cups water.
2. Bring to a boil over high heat; reduce heat and simmer until gizzard is tender when pierced, about 1 1/2 hours. Pour liquid through a fine strainer into a bowl; spoon off and discard fat. If you have more than 2 cups broth, return to pan and boil over high heat to reduce; if less, add water to make 2 cups total.
3. When meats are cool to touch, discard skin and bones; finely chop meats and reserve for cornbread-chestnut dressing. Discard vegetables.
Nutritional analysis per 1/2 cup.