Pavlova is a dessert of contrasts: a crunchy shell, a soft marshmallow-like centre, and a fresh, generous filling. This chocolate version is my favourite autumn Pavlova: cocoa is added to the meringue for an even more melting centre, while summer fruits give way to poached pears and caramelised walnuts. The combination of chocolate, fragrant pears and crunchy walnuts makes for a dessert that's as refined as it is comforting.