They have long used loach in diet. According to historical records, loach was called Nichu (mudfish) because it lives under muddy water.

The loach soup, a specialty of Kaesong area, is generally made with loach and bean curd, and it is very good for health.

Loach has lots of protein, fat, mineral matter and other nutritive substance and various medicinal ingredients. So, it is known as a nutritive foodstuff good for treating and preventing diabetes, hepatitis, cold and other diseases.

The loach soup is a favorite food for its high edible and medicinal values.

Every region has different cookery of loach soup and other ingredients.

Restaurants specializing in the soup have been built in different parts of the country and a show on the soup has been organized to diversify the cuisine and further develop the skill.