Separate the eggs. Beat the egg whites until they turn slightly white. Then, spoon by spoon, add the sugar.
Continue beating until a firm sugar snow forms. To test, take some snow mixture between your fingertips. When you no longer feel any sugar crumbs, the snow is ready.
Using a piping bag or even a coffee spoon, pipe or mound the sugar snow onto a baking sheet lined with baking paper.
Bake the meringue in the oven preheated to 100 °C for about 120 minutes.