What is "sungeoguk"

Sungeoguk is a variety of guk, or Korean soup, made with trout and black pepper. It has a clear broth seasoned with salt, minced garlic, ginger juice, and chopped scallions.

During ancient times the trout caught in Pyongyang, Chungsan, Anju, Kangso, Ryonggang, Chongju, Kasan, Sunchon, Cholsan, and Uiju, which are now in North Korea, were famous for their flavor. Those from the Taedong River, where trout are abundant, were especially renowned.

The soup dish is a representative dish in the cuisine of Pyongyang, the capital of North Korea, where the soup is called Taedonggang sungeoguk which means "trout soup from the Taedong River". The dish is served as a courtesy for important guests visiting Pyongyang and the question, "How was the trout soup?" is commonly used to greet people returning from Pyongyang.