Thai chicken soup or tom ka gai is a delightful mix of flavours and very quick to make. It is best made with galangal instead of ginger if you can find it.
In a saucepan, heat up the chicken stock just to a boil. Add lemongrass, galangal, lime leaves and chillies. Simmer 5 minutes.
Add the coconut milk, fish sauce, lime juice, sugar and salt. Stir. Bring back to the boil and add the chicken. Simmer 5 minutes or until chicken is done.