This boiling hot ginseng chicken soup, called samgyetang (삼계탕), is an iconic summer dish in Korea.Sam(삼) refers to 
ginseng (insam, 인삼), gye (계) means chicken, and tang (탕) is soup. It’s 
extremely popular as a nourishing food which helps fight the summer 
heat. As the Korean saying goes, eating the hot soup is “fighting the 
heat with heat.” 
  On sambok (삼복) days, it’s a Korean tradition to eat foods that are 
healthy and restorative. Samgyetang is a popular choice. Sambok days are
 3 distinct days that mark the hottest summer period. Based on the lunar
 calendar, they are chobok (초복, beginning), jungbok (중복, middle), and 
malbok (말복, end). Malbok means the summer is winding 
down.
Here is a recipe for samgyetang that I use: 
https://www.maangchi.com/recipe/samgyetang  It's a good basic recipe and the cook is quite a character. 
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