Hot and sour prawn, chicken and noodle soup

1.Combine lemongrass, chillies, lime leaves, fish sauce and 1½ litres water in a saucepan. Bring to the boil over medium heat, reduce heat to low and simmer for 5 minutes to infuse. Add chicken and prawns and cook until prawns turn pink (2-3 minutes). Using a slotted spoon, transfer prawns to a plate and keep warm. Continue to cook chicken until cooked through (5-7 minutes), then transfer to plate with prawns and keep warm. Strain stock (discarding solids), return stock to pan and add mushrooms. Return to the boil over medium heat and cook until mushrooms are tender (2-3 minutes).

2.Meanwhile, soak noodles in boiling water until tender (2-3 minutes). Drain and divide among bowls. Slice chicken and divide with prawns among bowls. Ladle over stock and mushrooms, scatter with herbs and chilli, serve with lime wedges and fish sauce.