Rinse the chicken and prepare all vegetables and aromatics.
Place chicken in a large pot with garlic, onion, shallot, scallions, celery, cilantro, and ginger.
Add fish sauce, apple cider vinegar, salt, bay leaves, peppercorns, and seasoning enhancer.
Pour in water to fully cover ingredients.
Bring to a light boil, then reduce heat and simmer for 2 to 3 hours.
Skim foam if needed during cooking.
Strain broth into a clean container and discard solids.
Adjust seasoning and add fresh lemon juice before serving.
