Effect: Clear heat and reduce phlegm, remove heat and nourish  throat Helps reduce body heat 
 
Cooking method: 
 1. After washing the ingredients with water, add an appropriate amount of water and put it in the pot. 
 2. Turn on high heat and turn off low heat boil for 1 hour. 
 3. After that, add brown sugar or rock sugar, after boiing, filter and serve