Boil the milk (1) and the Debic Butter .
Remove from the heat and add the flour.
Let it dry slowly over a low heat.
Gradually mix in the egg yolks and eggs.
Add the milk (2) last.
Beat the egg whites with the sugar until stiff.
Add the first mixture to the whipped egg whites and spread on a baking sheet.
Bake at 180°C for 20 minutes.