Using mixer, begin beating your egg whites and salt on a low speed, steadily increasing up to medium high.
While beating on a medium speed, slowly add the confectioner's sugar, about 1-2 Tbsp at a time. Once all the sugar is added, keep beating until the egg whites hold stiff peaks.
Preheat oven to 230 degrees F. Draw circles of approximately 4-8 cm diameter (you can use a pint glass as a guide) on each of the parchment lined sheets.
Spoon meringue into piping bag, fitted with 3/4 inch tip. Pipe meringue to cover circles on prepared baking sheet. Pipe two more rings of meringues on top of outer edge to form walls of Pavlovas.
Bake in center of oven until dry and crisp, about 1 1/2 hours.
Turn off the oven and let the meringues completely cool in the oven. Once cooled, you can top them with whipped cream and berries.