Onestar Old Fashioned Hamburgers

One Star Old Fashioned Burger is an American-style handmade burger restaurant in Gangnam-gu, Seoul, an 11-minute walk from Maebong Station Exit 4. It serves the One Star Deluxe, the Patty Melt, and the Truffle Mushroom Burger, with onion rings and cheese fries on the side. At lunch, a line of two or three parties means a table within 15 minutes, and plastic gloves are provided. The dining room is small.