In a large saucepan, combine the chicken carcass, bouquet garni and garlic in 2 litre of water. Bring to a boil, reduce heat, and simmer, covered, for 1 hour. Strain broth, refrigerate, and skim fat. In a large saucepan, bring broth to a boil over medium heat. Add potatoes, carrots, celery, onion, salt, marjoram and pepper. Cook until vegetables are tender, about 10 minutes. Beat milk into egg yolks in a small bowl. Gradually whisk in half cup of the hot broth. Stir into soup. Add sherry, chicken, and chopped eggs. Heat through. Pour into bowls. Garnish with parsley and serve with chese biscuits or cornbread. Serves 6. [ 365 Ways To Cook Chicken; Cheryl Sedaker, 1986 ]