Cut the chicken frames into medium-sized pieces.
Wash and cut the spring onion into small pieces or your preferred length for garnish. Do the same with the coriander leaves.
Wash coriander roots thoroughly, and lightly smash.
Peel garlic. Wash and thinly slice the galangal.
Cut the pickled limes into halves.
Using a heavy soup pot, fry the chicken pieces in just enough oil to keep them from sticking. When they're beginning to brown, remove and drain the oil.
In the residual oil, fry the garlic, coriander roots, and galangal until you begin to smell their fragrance.
Add the water and bring to a boil.
Add chicken pieces back in, as well as the salt, palm sugar, and fish sauce.
Return to a boil, then reduce to a simmer, cover, and leave for 20-25 minutes.
Remove the cover, add pickled limes, and simmer for another 10 minutes.
Sprinkle with coriander leaves and spring onions. Serve with a side of steamed rice and a dipping sauce (see Kitchen Notes).