Cook rice vermicelli according to packet instructions in salted boiling water.
Rinse vermicelli under cold water to remove excess starch and set aside.
Dissolve the sugar and the salt in the boiling water for the pickles, then stir through the vinegar.
Add the carrot and daikon to the pickle mixture and leave to pickle.
Mix all marinade ingredients with the beef and leave to marinate for at least 30 minutes.
Heat a little neutral oil in a wok or frying pan over high heat and flash-fry the beef until cooked through and lightly caramelised around the edges.
Mix the sugar with the boiling water for the nước chấm until dissolved.
Add the fish sauce, lime juice, garlic, chilli and white pepper to the nước chấm mixture.
Build your bowl with vermicelli noodles, lettuce, herbs, pickles and lemongrass beef.
Top with peanuts, crispy onions and a generous amount of nước chấm.
Toss everything together.
