Mapo tofu is a world-famous Sichuanese classic dating back to the Qing Dynasty. Word has it that this century-old shop is the true original source of this numbing, spicy dish, invented by Lady Chen. Silky tofu, ground beef and spices are cooked in a stone pot that stays hot for a long time, perfect with a bowl of steamed rice. Zhong dumplings and lotus leaf-wrapped steamed pork in spiced rice flour are also worth trying.