A deeply aromatic, slow-simmered bone broth perfumed with charred ginger, star anise, and cinnamon, ladled over silky noodles and fresh herbs.
Simmer the beef stock with charred onion, ginger, star anise, and cinnamon for 25 minutes.
Stir in fish sauce and strain the broth.
Divide the noodles between bowls and top with a generous pile of raw bean sprouts.
Fan the raw beef over the sprouts and pour over the boiling broth to cook it.
Serve immediately with lime and chili on the side.