First,

Confirm whether you are buying good fungus. You can pick up the silver ear and smell it, whether it has a pungent

nose flavor or a natural mushroom flavor. Then look at the color, whether it is normal yellow, if the color is very white should be noted, may be because of smoked sulfur.

Secondly, the fungus has not smoked sulfur, soaked and boiled for a long time is still crunchy, perhaps buy is aged fungus, so go to the supermarket to buy, we should also pay attention to check the date of expiration.

Third, to soak in cool or warm water, some people soak in a hurry with boiling water, but not good. After soaking to cut off the root. It is recommended to use a crock pot to slow cook.