Beonpaeti Beon Busan Main Branch is a hamburger restaurant near Seomyeon Station, in front of Gourmet Street on the first basement floor of the Busan Lotte Department Store main building. Its cheese burger combines a soft bun grilled in butter with a large, moist beef patty. Large leaves of lettuce and tomato cut the richness of the meat, and thick-cut fries come with it. The truffle fries are sprinkled heavily with truffle oil.