Cut the salt pork and stale bread into small, square pieces.
Fry the salt pork and bread together in a frying pan with the butter for about two minutes.
Add the boiled potato (cut into small squares), chopped parsley, chopped chives, and a pinch of salt and pepper to the pan.
Beat the eggs in a bowl.
Pour the eggs into the pan and make an omelet.
Serve very hot.