Grilled Bananas with Coconut-Caramel Sauce

To paraphrase Kevin Costner in Field of Dreams, if you grill it, they will come. Such turned out to be the case for a Bangkok grill mistress named Saisuwan. Five years ago, she scraped together enough cash to set up a pushcart on Charoen Krung Road behind the Sheraton Hotel. Her grilling skills became so legendary, guidebooks from all over the world sing her praises. Saisuwan serves just one dish—but what a dish—grilled bananas slathered with coconut caramel sauce. You can eat them f