PREP THE PAN AND OVEN
Preheat Oven to 300°F.
Use a bowl or a cake pan to draw a circle between 8 and 9 inches on a sheet of parchment paper. Place the paper drawn side down on a baking sheet . Set aside.
In a clean dry mixing bowl, add the egg whites, cream of tarter, and salt. Using a hand mixer, beat on medium low speed until frothy. This will take about one minute. (You can use a stand mixer fitted with the whisk attachment too.)
Once the egg whites are frothy, begin to sprinkle in the fine caster sugar one spoonful at a time until well combined. Avoid the urge to add more than a tablespoon at a time! It has to have time to dissolve in accordance to becoming fluff. Trust the process!
Once the sugar is completed added and dissolved add the vanilla to the pavlova meringue. Turn the mixer to medium high speed and beat until stiff glossy peaks form. This will take 5 to 8 minutes. The pavlova meringue will stand straight up on the whisk when done. It will not droop.
Sprinkle on the starch and fold into the meringue.
Next, place a tiny dab of meringue on the corners of the prepared parchment pan to hold it in place. Spoon the glossy meringue inside the circle on the prepared pan using a spatula. Create a slight depression on top. For a rustic touch, create vertical swoops on the sides.
Place the meringue in the preheated oven and immediately drop the temperature to 250°F. Bake for 1 hour to 1 hour and 15 minutes until the pavlova is slightly golden in color and a shell has formed.
Tuen the heat off and allow the pavlova to cool completely for about 3 hours. Avoid opening the oven door while cooling. See notes for faster cooling tips.