Low-fat prawn noodle soup

Method

1. Heat the oil in a large pan. Slice the onion, then add to the pan and cook for 5 minutes without colouring. Finely slice the garlic and add to the pan with the chilli flakes. Cook for 2 minutes. Finely slice the coriander stalks, reserving the leaves, then add to the pan with the fish sauce and stock. Simmer gently for 10 minutes.
2. Meanwhile, cook the noodles according to the pack instructions. Drain, rinse well under hot water, then set aside, covered, for 10 minutes.
3. Add the prawns to the soup with the spinach and cook for 2-3 minutes until the prawns are completely pink. Taste and season. Divide the noodles among 4 bowls, then pour over the soup and garnish with the coriander leaves. Serve with soy sauce and lime wedges, if you like.