Chicken soup

This is my recipe for a basic chicken soup. Currently I am doing the Dukan diet so I have added the optional ingredients later. So for those of you following Dukan, the basic soup is fine for 'P' days and I add greens on'PV' days. Needless to say, peas noodles and sugar are all no-no's still. However, the basic soup recipe is delicious and so wholesome. You can simply add to it it depending on your mood or needs.

Ingredients
1 quantity of chicken stock. Home made or shop bought. I usually have about 1.5 litres, but you can have more or less.
1 stalk of lemon grass (I keep mine in the freezer)
1 red chilli chopped
Dash of soy
Dash of fish sauce
Leftover chicken

Optional ingredients
Noodles
Spring onion chopped
Greens (spinach, cabbage, pak choi, mangetout, sugar snaps...)
Sugar
Lime juice

This soup is so easy and comforting. Heat stock. Add the lemon grass and allow the stock to be infused by it. Add chopped chilli. I leave this to simmer gently for at least 10 minutes but it can be left for however long you need it to be.
Just before you are ready to eat, add the chopped chicken and fish sauce and soy sauce to taste.
If you are using the optional ingredients, just precook the noodles and poor over the soup. The vegetables can be added to the soup earlier to cook through.
Once the chicken is heated through, serve.