In a medium pot, combine the beef bone broth, star anise, cinnamon stick, and sliced ginger, bringing to a gentle simmer for 10 minutes to infuse the aromatics.
While the broth simmers, cook the rice noodles in a separate pot of boiling water according to package directions until tender, then drain and set aside.
Remove the star anise, cinnamon stick, and ginger slices from the broth, then stir in the fish sauce, sea salt, and black pepper.
Place the cooked noodles in a large serving bowl and top with the raw, paper-thin slices of beef eye of round.
Pour the boiling hot broth directly over the beef slices to cook them instantly until they reach a tender, perfectly pink finish.
Garnish the bowl with fresh bean sprouts, scallions, cilantro, and Thai basil, serving immediately with a lime wedge for squeezing.