Preheat the oven to 170°C (340°F).
In a bowl, add egg whites and salt, then whisk until foamy.
Add sugar and mix with a whisk.
Add coconut flakes and gently mix with a spatula until evenly combined.
Shape the dough into small balls and place them on the baking sheet.
Bake in the oven at 170°C (340°F) for 15 minutes.