What is "tangpyeongchae"

Tangpyeongchae is a Korean dish that was part of the Korean royal court cuisine. It is made by mixing julienned nokdumuk, mung bean sprouts, watercress, stir-fried shredded beef, thinly shredded red pepper and lightly broiled gim. Tangpyeongchae is seasoned with a sauce made with ganjang, vinegar, sugar, sesame seeds and sesame oil. The dish is most often eaten in late spring and summer.