Baek Sojeong Gongneungjeom is a Japanese restaurant in Gongneung, Seoul, serving mazesoba, buckwheat soba, and donkatsu. The mazesoba mixes sauce and toppings into udon noodles, and buckwheat soba and curry are sold as well. Orders are placed on an electronic menu pad at each table and paid for immediately by card. The buckwheat soba broth is salty, and a wait forms during lunch hours.