In the past when refrigerators were unknown, long Korean winters ​ — with temperatures near the freezing point — ​ necessitated the preparation of food that could last a long time.
Agrāk, kad Korejā ledusskapjus vēl nepazina, produkti bija jāgatavo tā, lai garajos ziemas mēnešos, kad temperatūra noslīd gandrīz zem nulles, tie nesabojātos.