Petit Mouchoir made all the running as he followed up his course and distance victory over Christmas in the BHP Insurance Irish Champion Hurdle at Leopardstown.Henry de Bromhead's progressive grey has made great strides since falling in the Fighting Fifth Hurdle at Newcastle and was holding Willie Mullins' Nichols Canyon when that horse came down at the final flight under Ruby Walsh.Mullins' other runner, Footpad, made inroads on the leader on the dash to the line, but David Mullins just had to keep Petit Mouchoir (9-10 favourite) up to his work to hold the advantage, having a length in hand.De Bromhead was completing a big-race double after the victory of Some Plan in the Arkle Novice Chase.