On a street studded with reputable eateries, lo-fi Jai Thai serves up cheap, tasty Thai under the gaze of Siamese royalty. Grab a pavement table and channel Bangkok with fragrant green curry chicken or mouthwatering fried prawns in a sweet-and-sour tamarind sauce. Like it hot? Slurp a bowl of tom yum soup (order the shrimp version). Cash only.