Cut the pork leg into small pieces, rub with salt, rinse thoroughly, blanch in boiling water, and rinse again. Place the pork leg in a pot, add water, salt, and peeled, crushed shallots. Bring to a boil and let it simmer for 30 minutes until tender, along with the corn cut into pieces.

Once the pork leg is tender, return it to the stove, add the carrot, and bring to a boil for a few minutes until the carrot is soft. Then add the potatoes and simmer together with fish sauce. When everything is tender, ladle into a bowl, add chopped cilantro and green onions, and sprinkle with ground pepper for aroma.