Boil in a saucepan the cod previously cut into pieces. When cooked, drain and let cool it .
Once cool blend the cod and place it in a bowl. Add the cream and mix well with a wooden spoon.
Melt the butter in a saucepan and put the cream and cod prepared beforehand. Season with salt and pepper and cook for 10 minutes.
Bring to a boil a large pot full of water, add salt and cook the spaghetti. Drain the pasta and skip it in pan with the cream.
Serve with a glass of white wine.