Spring Soup

Name: Spring Soup
Ingredients: 3 chicken drumsticks; 2 medium carrots; 5 stalks of celery; 1 white onion; 1 leek; 1 nub of ginger, plus more, grated, as garnish; 1 thyme sprig; 1 bay leaf; 8 peppercorns; 1 star anise; 1 clove; 4 tablespoons butter; a small bunch of chives; 8 scallions; 1 package of Udon doodles; 4 eggs, as fresh as possible; ½ a lime; 8 slices Pane Siciliano