A Foodie Riddle: In what gastronomic wonderland is the avant garde more old fashioned than the oldest old-timers?  Why Brooklyn, of course!  Where else but on the borough’s brownstone-lined streets will you find the best slice of “real New York pizza” next door to its locally-sourced, painstakingly prepared (and equally delicious) brick-oven artisanal cousin?  On the Bon Appetit Brooklyn Grub Crawl, old, ethnic, neighborhood joints share sidewalk space with the cutting-edge old-timey-ness of New York’s hippest culinary innovators.  Guests will be whisked through an unforgettable weekend-long line-up of restaurants, chefs, bars and food purveyors, with local music talent and artists.  Dig in!