A deeply aromatic and restorative Vietnamese noodle soup featuring a clear, savory beef broth infused with charred ginger and star anise, served with tender rice noodles and thin slices of beef.
For the clearest broth, never let it reach a vigorous rolling boil during the 3-hour simmer. Leftover broth can be frozen for up to 3 months. To make slicing the raw beef easier, freeze the steak for 30 minutes before cutting.