Take one pound of salt codfish. Boil it and remove the skin and bones.
Then fry lightly in butter, adding chopped-up parsley, salt, and
pepper. Stir about constantly, and add from time to time a little
boiling water, until the fish is thoroughly cooked. Then beat up the
yolks of two eggs and add them with a little flour, and cook for a few
moments more. Squeeze on some lemon juice and serve.
Source:
Simple Italian Cookery 
