In a pot over high heat with boiling water, add chicken backs and necks, 1 teaspoon of salt and white wine. Parboil for 2-3 minutes, and then rinse the chicken parts under water. Set aside.
Prepare all aromatics (ginger, garlic and shallots). Put all the spices (black cardamom pods, star anises and coriander seeds) in a spice pouch.
In a clean pot, add chicken parts, chicken thighs and/or breasts and 10 1/2 cups of water. Bring it to a boil, skim off any foam or impurities. Reduce heat to a simmer. Add 2 teaspoons of salt, ginger, garlic, shallots and the spice pouch to the pot. Partially cover the pot and leave it to simmer very gently.
After about 15 minutes, when the chicken thighs are fully cooked, transfer them to an ice bath. Amount of time may differ if you use chicken breasts. Continue to simmer the broth for another 25-30 minutes.
While the broth is still simmering, prepare vermicelli noodles according to package instructions and garnishing herbs (kaffir lime leaves, scallions, cilantro). Also shred the chicken meat. Add noodles, chicken meat, herbs and black pepper to serving bowls.
After 25-30 minutes, add 3 tablespoons of fish sauce to the broth (more or less to taste). Bring the broth back to a boil, and then ladle broth into serving bowls. Serve immediately.