Naengmyeon
Naengmyeon means literary in Korean, cold noodles. There are two kinds, one is Bibim-Naengmyeon which is mixed with spicy sauce with a little bit of beef or vegetable broth. Another one is Mul-Naengmyeon, served in a chilled broth made from beef or radish water kimchi.
Naengmyeon used to eat by only nobles, especially among scholars in seventeen centuries. It was used to eat only in winter from late seventeen centuries but when technology was introduced how to store ice in summer, Naengmyeon became the most recognised a summer dish. It is too fresh and cool to resist in hot summer weather in Korea

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Naengmyeon is famous for two representative cities. one is Pyongyang and another is Hamheun, these two cities are located in North Korea.
After the Korean war in 1953, many North Koreans who were flown to South Korea to live, they felt nostalgia for their food so some people started to open only Naengmyeon restaurants to share their feeling about left family in North Korea. But Naengmyeon is significant dishes and most eaten popular among South Koreans.
Pyongyang Naengmyeon is buckwheat mixed with flour, less chewy so more likely used eat as Mul Naengmyeon(beef or radish kimchi broth ) whereas Hamheun Naengmyeon is made from potatoes flour so a lot chewy used to Bibim Naengmyeon( mixed with chilli sauce).
Why do we eat after the meat meal? In old days, there was called a Kisaeng house which is highly trained artist women in Joseon dynasty (1392-1897) who entertained men with music, conversation and poetry in much same ways as Japanese geisha.
Often high class scholars went to take a break from their studying and after meal (normal meat and alcohol) were served from the Kisaeng house as hangover cure.
We still eat this noodle after the meat meal and still expensive compare to other cold noodles.