Wok-tossed noodles seared over ferocious heat with spring onions, beansprouts, aromatic garlic, and savoury seasoned sauce.
Slice the beef thinly and mince the lemongrass.
Toss the beef with the lemongrass, garlic, fish sauce, and brown sugar, and rest for 30 minutes.
Sear the beef in a hot wok or grill until charred at the edges and just cooked.
Pile the rice vermicelli into bowls and top with the beef, cucumber, and pickled carrots and daikon.
Pour the nuoc cham over the bowl, add fresh herbs, and serve.