Bas Burger Seongsu Branch sells handmade burgers and handmade beer near Seongsu Station, Ttukseom Station, and Seoul Forest. The burgers use juicy beef patties and soft brioche buns with tomato, onion, and Bas sauce. The chili mozzarella cheese bar comes as a spicy cheese side, and potato chips are refilled without limit. When visitors crowd in, a wait forms and diners sometimes wait briefly before eating.