Vanilla and Chocolate Cream Pavlova

• 4 large egg whites
• 8 oz/225 g caster sugar

Line a baking tray with non-stick baking parchment. Mark a large circle or a square or rectangle if you prefer.

Whisk the egg whites until they are stiff, then, still whisking, add the caster sugar a spoonful at a time, until all the sugar is incorporated and you have a stiff meringue. Using a large metal spoon, fold in the cornflour, vinegar and vanilla essence. Smooth the meringue int