Pavlova with Citrus Curd

Gooey and fresh with bursts of citrus.

6 Babylonstoren eggs (separated) 1½ cups castor sugar 1 Tbsp cornstarch 2 tsp white vinegar fresh cream 8 citrus fruits (6 juiced, 2 zested) 1 lemon ½ cold salted butter ⅔ cup granulated sugar salt