Char the onion and ginger to add a smoky flavor to the broth.
Boil the chicken, skimming off impurities to achieve a clear broth.
Add aromatics like star anise and cinnamon to the broth for rich aroma.
Season the broth with rock sugar, fish sauce, MSG, and chicken bouillon.
Prepare rice noodles according to package instructions.
Prepare toppings including green onions, cilantro, sliced onion, lime wedges, and bean sprouts.
Shred or slice the cooked chicken into bite-sized pieces.
Assemble the Pho bowls by layering noodles, chicken, broth, and toppings.
Serve with Hoisin sauce and Sriracha on the side for customization.