Start by peeling and lightly smashing ginger. Slice the white parts of the green onions into finger-length sections, and save some of the sliced green tops for garnishes. Crush cilantro sprigs slightly to release their oils for the broth.
Heat coriander seeds and the clove in your stockpot over medium heat until they’re fragrant, about a minute or two. This step intensifies their flavors. Add the ginger and onion sections, stirring briefly to combine their aromas.
Pour in the broth and water, along with the cilantro sprigs, chicken, and salt. Bring everything to a gentle boil, then reduce the heat to maintain a light simmer. Allow the chicken to slowly cook in this aromatic mixture for about 10 minutes.
Once the chicken is tender and fully cooked, remove it from the broth and submerge it in cold water to stop the cooking process. Shred or slice it into thin, bite-sized pieces. Set aside while the broth continues to simmer for another 15-20 minutes to concentrate its flavors.
While the broth simmers, soak your rice noodles in hot water until they’ve softened. Strain, rinse with cold water, and keep them ready for assembly.
Before serving, strain the broth through a fine mesh sieve to remove any solids, leaving a clear, flavorful base. Taste and adjust the seasoning with fish sauce and a touch of sugar if you prefer a sweeter balance.
Divide the noodles among bowls, arrange the shredded chicken on top, and pour the steaming hot broth over everything. Garnish with cilantro leaves, green onions, and your choice of extras like bean sprouts, basil, or lime.