Huángzéhé Peanut Soup Shop

Since 1945 this humble counter-service diner has filled an unusual craving for sweet local speciality huāshēng tāng (花生汤, peanut soup). Other snacks include fried zǎo (枣, red dates) and hǎlìjiān (海蛎煎, oyster omelette). Get a free reloadable card from the cash register attendants that you swipe to order food; unused credit is refundable.