“It still burns,” was all Zahirudd Khan could say after handsomely coming out on top at a hot wing eating contest at a small, elevated local Thai spot. A towering, working-class figure, of Bed-Stuy pedigree, donning an durag under his baseball cap, working as a chef somewhere in Dumbo until recently, Khan was a veritable symbol of the small weekend festival, conjured by Prasneeya Derry, who owns Tong, of 321 Starr Street, and who had promised in a press release that her wings could summon “an afternoon of excitement and daring feats.”