First of all, if the salt is put first, the first long-term so on the iron and aluminum pot corrosion, if the first iodine long time after the chemical reaction will steam off. Secondly, if you put the salt first, after heating will carry out chemical changes, salt into nitrite, and nitrite is carcinogenic.
Meat stew need to first meat into the boiling water for a few minutes, remove the foam or meat out of the re-fill a pot of water to continue to stew, boil potatoes or lotus root and so on into the pot.
When the soup is ready, add the right amount of salt, the flavor will be very good, and very healthy~