Step 1

In a pot add pork hock, pork bones and vinegar then pour enough boiling water to cover. Boil for 10 minutes or until lots of scum rises to the top. Turn heat off then drain, rinse pork and bones in running cold water to remove any scum attached.

Step 2

Place pork hock and bones back together with all other soup ingredients, pour enough boiling water then simmer for 1 1/2 hrs or until pork is tender. Season with fish salt if needed.

Step 3

Cook noodles according to packet instructions.

Step 4

Place noodles and bean sprouts in bowls, ladle boiling soup into bowls and add some pork hock pieces.

Step 5

Garnish with spring onions and crispy fried shallots then serve.