It was a thankfully mild Sunday in Chinatown, and Grand Central Plaza was filled with red tents under which chefs, cooks, brewers, bartenders and vendors doled out Sriracha-themed exclusives to enthusiasts of the celebrated, local Rooster sauce. Whether the food and drink were evocative of or complementary to the red jalapeno chili sauce, there was no shortage of flavor to be found on that block between Broadway and Hill.