Pour water into a pot and bring to a boil. Add the pork ribs and simmer on low heat for 1 hour.

Once the pork ribs are tender, add the galangal, lemongrass, kaffir lime leaves, shallots, bird's eye chilies, and chili powder. Cover and continue to simmer for 10 minutes.

Season with fish sauce and sugar, then turn off the heat. Add lime juice, dried chilies, and cilantro. Serve.