Preheat oven to 200°C. Whisk eggwhites and a pinch salt in an electric mixer on low speed until they start to break up, then increase speed to medium and beat until soft peaks form (2 minutes). Add one-third of sugar and whisk to combine, then gradually add remaining sugar and whisk on high speed until stiff peaks form (2-3 minutes). Fold through cornflour, vinegar and vanilla, then form into a 24cm-diameter round with edges slightly higher than centre on a baking tray lined with baking paper. Reduce oven to 160°C and bake pavlova until lightly browned on the outside and cooked on the inside (25-35 minutes), turn oven off and stand in oven for 10 minutes, then remove and cool to room temperature (1 hour).

Meanwhile, for passionfruit curd, place yolks in a heatproof bowl, whisk to combine. Combine sugar, passionfruit pulp and butter in a saucepan over low heat, stir occasionally until butter melts and sugar dissolves (5 minutes). Add one-third of passionfruit mixture to yolks, whisking continuously, then return to pan and stir continuously until thickened (3 minutes). Do not boil. Add lime juice, remove from heat, pass through a coarse sieve into a container. Cover closely with plastic wrap, cool (10 minutes), then refrigerate until chilled (1 hour).

For vanilla cream, whisk cream, sugar and vanilla to stiff peaks in a bowl.

Fold passionfruit curd through vanilla cream, then form quenelles of mixture and spoon over pavlova. Top with extra passionfruit pulp and serve.