step 1
Bring chicken stock or water to the boil, add galangal, lemon grass, kafir lime leaves, coriander stalks and boil for 5 minutes until fragrant.
step 2
Add chicken breast to the soup, boil for another 5 minutes until cooked.
step 3
Add a pinch of sugar, coconut milk, chillis, cherry tomatoes and mushroom. Bring the soup to the boil again.
step 4
Take off the heat. Season with lime juice and fish sauce. Add coriander leaves and spring onions.