275 g (10 oz) dried flat rice noodles, soaked in water for 2 hours, then drained or flat egg noodles
225 g (8 oz) tender beef steak, about 2.5 cm (1 in) thick, cut into paper thin slices (it helps if the meat is partly frozen)
2 - 3 fresh hot red or green chillies, cut crossways into very thin slices
1 spring onion, cut into fine rounds
6 tbsp fresh coriander leaves, coarse stalks removed
6 tbsp small fresh mint leaves, coarse stalks removed
1.5 litres (2 1/2 pints) beef stock plus about one third of the beef brisket used in making it, wrapped tightly and refrigerated and cut against the grain into thin slices
1 lime, cut into wedges, to serve
red pepper sauce to serve
1 small bowl fish sauce (nam pla), to serve
seasoned vinegar, to serve