Draw a circle around a tea plate on a sheet of baking parchment. Turn over and place on a baking sheet
Place 3 large egg whites and 175g (6oz) caster sugar in a large mixing bowl and place over a pan of gently simmering water. Make sure the base of the bowl does not touch the water.
Whisk pother until the mixture thickens to form a smooth thick meringue about 8 to 10 minutes.
Remove the bowl from the pan and continue whisking until the meringue has cool completely.
Preheat the oven to 130℃ (110℃ fan)/250°F/gas mark ½ .
Either spoon the meringue onto the prepared baking sheet and spread it out to the rough dimension of the circle you drew. Use the back of a spoon to hollow the centre out a little making the sides a little taller.
Alternatively fill a piping bag fitted with a nozzle and pipe the meringue in a continuous spiral to fill the area of the circle, then build the edges of the pavlova by piping around the circumference of the circle a few times
Bake in the preheated oven for 70 - 80 minutes until the meringue is firm to the touch and just starting to colour. Reduce the oven temperature further if your meringue is browning.
Turn off the oven. Leave the pavlova in the oven and allow the oven to cool completely for at least 2 hours.