Comment on Bacalhau Espiritual Recipe by Antonio Loureiro.
Well, I am a portuguese cook. My family do this recipe since I was a little kid and we never used milk, or bechamel, or butter.
The true “bacalhau espiritual” goes like this: you boil the cod fish in water, then when finished, you reap the slices of the cod, then you soak the bread “old bread”, in the water when the fish was boiled.
Boil potatos and carrots, “brunese” cut (little squares), finally you mix everything and take it to the oven.
You have another recipe of cod fish wich is called “bacalhau com natas”, which is more likely the recipe you posted, but it doesn’t take bechamel, only white cream “natas”. You can put cheese on top “emmental cheese” and thats pretty much it.