Knead all ingredients in a bowl and then cover and cool for about 45 minutes.
Now preheat the oven at 170 ° C convection. Meanwhile, shape the dough into small balls and then into croissants and distribute on two baking trays.
Bake the baking trays one after the other for 15 to 20 minutes at a time. Then let the croissants cool and sprinkle with powdered sugar or roll them in powdered sugar.