Yongkkasseu is a donkatsu restaurant near Mapo Station in Seoul that serves cheese donkatsu and a combination of anshim katsu and fish katsu. The cheese donkatsu is filled with mozzarella cheese and comes with a house-developed yuja sauce and mustard. On weekday lunches and dinners the restaurant draws a crowd, but rice, banchan, and salad are served together and the food does not take long to arrive. The interior is small, so tables are almost all filled during mealtimes.