Five Guys Yongsan sells hamburgers, french fries and milkshakes, and is located on the third floor of I'Park Mall in Yongsan. Burgers are ordered by choosing toppings yourself, and fries and milkshakes can be ordered alongside them. A wait forms even on weekdays, and on weekends it is busy enough that seating runs short. Peanuts are available to eat while waiting for an order, and the store is loud with music and order announcements, with not enough seats.