One of the things we cooked around the world was, when we find it (very seldom), bacalhau com natas. Portuguese recipe, but everyone seems to like it.
Cook the cod in boiling water, strain and rinse
Fry potatoes in butter, sliced thin
Fry onion in 4 tablespoons butter
Melt 2 tablespoons butter, add flour, milk and seasoning to make a béchamel sauce
Add half the cream to the sauce still on the stove and the rest at the end
In a oven pan – layer potatoes, cod, onion
Pour the sauce and bake for 30minutes