Australia's undisputed Queen of Chocolate, Kirsten Tibballs, joins the MasterChef kitchen for the very first pressure test of the series. With her toughest recipe yet, she challenges the contestants with her Chocolate and Coffee Caviar, which to the naked eye resembles a freshly opened caviar tin, full to the brim inside, the trick is, it's all made of chocolate and decadent dessert layers.Australia's undisputed Queen of Chocolate, Kirsten Tibballs, joins the MasterChef kitchen for the very first pressure test of the series. With her toughest recipe yet, she challenges the contestants with her Chocolate and Coffee Caviar, which to the naked eye resembles a freshly opened caviar tin, full to the brim inside, the trick is, it's all made of chocolate and decadent dessert layers.