Bruleed mango pavlova

Name: Bruleed mango pavlova
Prep time: 45 min
Cook time: 2 h 30 min
Total time: 3 h 15 min
Cuisine: Australian
Ingredients: 6 eggwhites, at room temperature; 1 1/2 cups (330g) caster sugar, plus extra to caramelise; 1 tsp white vinegar; 3 tsp cornflour; 1 tbs vanilla extract; 3 mangoes, peeled, cheeks sliced; 400g thickened cream; 250g sour cream; 1/2 cup (80g) icing sugar mixture, sifted; Micro mint leaves, to serve; 1 cup (220g) caster sugar; 3/4 cup(180ml) Cointreau or Grand Marnier