Combine the strawberries, vinegar, sugar and black pepper in a baking dish then place onto the preheated BBQ, close the lid and cook for approx. 8-10 minutes until softened and juicy. Set aside to cool.
Using an electric mixer, whip the egg whites on a medium speed for 1 minute, until soft peaks form. Gradually add the sugar while continuing to whip, then continue to whip the meringue until the sugar has dissolved, about 4-5 minutes.
Continue to whip as you add the cornflour and vinegar, combining well.
Preheat the left half of the BBQ over a low heat.
Spoon the meringue onto a baking paper lined tray, shaping into a 20cm circle. Don’t disturb the meringue too much.
Place into the side of the BBQ without heat, on a trivet or wire rack and close the lid. Cook for 1 ½ hours then turn the BBQ off and allow the pavlova to cool without opening the lid.
Meanwhile whip the cream to stiff peaks. Top the pavlova with the strawberries, some juices & passionfruit.