Nourishing Lung Soup-watercress Pork Bone Soup
1.
Wash watercress and carrots, and cut carrots and sweet corn into large pieces.
2.
When buying pork bones, let the stall owner cut them into large pieces and come back to wash them.
3.
Add water to the pot, add the pork bones to a boil, and skim any foam.
4.
Bring all the ingredients to a boil and simmer for 2 hours.
5.
After the stew, add some salt to taste.
6.
A very sweet soup.