Separate the egg whites and yolks.
Add sugar to the egg whites and make a meringue.
Mix sugar and salt into the egg yolks.
Add cornstarch to the egg yolk mixture and stir.
Carefully fold the meringue into the yolk mixture in 2-3 additions.
Line a pan with parchment paper and spoon the batter onto it.
Cover with a lid and bake on low heat for 15 minutes.