– 1 batch of meatballs (see recipe in 'Goes well with')) – 1 tbsp vegetable oil – thumb-sized piece of ginger, peeled and finely grated – 8 spring onions, finely sliced – 2 star anise – 1 cinnamon stick – 2 lemongrass sticks, tough outer leaves removed and finely sliced – 1-2 green chillies (seeds removed if you prefer less heat), finely sliced – small bunch of coriander, leaves and stalks separated, both finely chopped – 1 tbsp light brown soft sugar – 1¼ litres beef stock – 1-2 tsp fish sauce – 1 tsp soy sauce, plus extra to serve – 2 handfuls of ready-to-eat beansprouts – 3 rice noodle nest – 1 lime, cut into wedge