Yellow represents earth and the center among the five cardinal directions. In ancient Korea, yellow was used for the emperor’s royal robes to symbolize nobility, authority and trustworthiness. Furthermore, in Korean traditional medicine, yellow ingredients are believed to affect the function of the stomach and the spleen and thus the appetite. These include pumpkin, sweet potato and other foods, including soybeans, the main ingredient of doen-jang (soybean paste) and gan-jang (soy sauce).
The below food is called dduk yuk , which is the first food for a year in Korea .
**This short posting is mostly rephrased from “Oh bang saek: The philosophy of Five colors behind Korean cuisine by Korean Culture and Information Service” and I will post the meaning of each color in Korean food according to the above articles I mentioned.