There's no doubt that the team of Japanese bakers who run Tokyo Premium, which opened last fall on Old South Pearl Street, are masters of their craft. Light and buttery pastries filled with glazed fruit or custard are as good as they get anywhere in town, and savory buns decorated with eggs, corn, bacon and other lunch-ready toppings make the bright cafe a recommended stop to satisfy a nosh. But beyond the matcha green-tea lattes and delicate sandwiches made on impossibly airy clouds of shoku-pan bread awaits a goofy treat sure to put a smile on the surliest bakery shopper: hot dogs wrapped in toothsome house dough squiggled with ketchup and mustard before being baked. They're the Japanese answer to Chicago bagel dogs, and you can also find mini-sausage bites in the bakery's pan d'epi, a French pull-apart specialty that here gets a meaty addition. Just tell everyone they're for your kids — then stuff your face on the drive home.