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.
Dahulu, sewaktu lemari es belum ada, musim dingin yang panjang di Korea ​ — dengan suhu mendekati titik beku ​ — mengharuskan makanan dipersiapkan agar awet untuk waktu yang lama.