For the Quiche Lorraine, first prepare the short pastry. For this, mix all ingredients and let rest briefly. For the filling, chop the bacon, cheese and leek and then stir in all the other ingredients.
Roll out the short pastry and place it in small molds. Spread the filling on the dough and bake in the oven at 170 °C for about 20 minutes. Let the Quiche Lorraine cool a little and serve.