This open-all-day-and-half-the-night nosh bar is Eric and Sophie Banh’s love song to the street food they ate as children in Saigon—and therefore hews to a more traditionalist standard than we’ve seen in their Monsoon restaurants. Where those represent bright fusion, Ba Bar serves up street-style classics: like noodle bowls topped with grilled chicken or charry prawns or Peking duck, with peanuts and caramelized shallots and greens and nuoc cham; or big, loaded bowls of pho, heady with basil and onions and mint and sprouts and fork-tender sheets of flank steak. Ingredients are scrupulously sourced and lovingly handled; beverages, coffee to cocktails, are bright and free flowing. The only flaw in this engaging model is service that’s well meaning but diffident. Open till 4am weekends.