Nai Ek in Bangkok's Yaowarat has cooked rolled-rice-noodle kuay jab in peppery pork-offal broth until midnight since 1960, the late-night canonical Chinatown.
Try: Kuay jab Yaowarat in pork broth
Tip: Open 08:00 to midnight daily, cash only. Order with extra crispy pork belly; the pork offal bowl is also the local pick.
Polo Fried Chicken in Bangkok's Soi Polo is the Bib Gourmand garlic-fried-chicken room, open until 21:00 daily with half birds blanketed in crispy fried.
Try: Garlic fried chicken (gai tod)
Tip: Cash only. Last orders 20:30. Half a fried chicken with som tam Thai and sticky rice is the canonical late-dinner order.