1. Wash water chestnut and cut it in half. Put it in boiling water and simmer for half an hour. Water chestnut has the effects of clearing away heat and resolving phlegm, stimulating appetite, promoting digestion, promoting fluid production and moistening dryness. Water chestnut with Sydney, clearing heat and resolving phlegm, treating dry stool.

2. Boil water chestnut for half an hour without peeling. There is no need to peel water chestnut skin because it has a better effect of clearing away heat, promoting fluid production and removing fire than water chestnut meat. But water chestnut grows in the soil, and there are many bacteria and parasites on the epidermis. Therefore, in order to play its due health care role, it is necessary to wash water and boil it.