For the dough, beat the egg whites with the whisk of the hand mixer until stiff, while letting the sugar trickle in. Stir until the egg white mass is shiny white (takes about 12-15 minutes).
Stir in the almonds. Cover the meringue and put it in a cool place for about 4 hours. Then dust a thin layer of icing sugar on a work surface and roll out the dough about 1 cm thick. Cut out stars of different sizes and place them on two baking trays lined with baking paper.
For the glaze, whisk the egg whites with the whisk of the hand mixer until stiff, sieve and add icing sugar, add lemon juice, also stir until the glaze is shiny white. Brush the glaze onto the stars and bake in the preheated oven (electric oven: 150 °C/ gas: level 1) for 20-25 minutes one after the other.
Remove from the oven, place on a rack and allow to cool.