Naturaldo Sogeumppang Seongsu Branch is a takeout-only bakery in Seongsu that sells one item: salt bread. The bread is made with Canadian wheat, French AOP butter, and West Sea sun-dried salt, giving it a crisp exterior, a moist and chewy interior, and a strong butter aroma. Orders are placed at a kiosk and sold in sets of four, with no single-piece sales. Because it is takeout-only, the line moves quickly even when long, and the bread tastes greasy once cooled due to the high butter content.