Down the leafy streets of north Hanoi's Cau Giay district, not far from Nguyen's family business, sits one of the city's most famous restaurants, Quan Thit Cho Chieu Hoa, which has only one thing on the menu. There's dog stew, served warm in a soup of blood; barbecued dog with lemongrass and ginger; steamed dog with shrimp-paste sauce; dog entrails sliced thin like sausage; and skewered dog, marinated in chilli and coriander. This is just one of a number of dogmeat restaurants in Cau Giay, but it is arguably the most revered, offering traditional dishes in a quiet setting along a canal.