Wing Lok Yuen Restaurant is a small shop selling hot dogs and cha chaan teng meals in an alley of the old commercial district in Central, Hong Kong. Its signature is a Hong Kong-style hot dog made with bread and sausage grilled to order and topped with a sweet-and-sour sauce containing pickle bits. Inside, customers pay first and then hand the paper to the staff grilling the hot dogs to place the order. The sausage is small, so a single one leaves the portion feeling light.