For the deviled eggs with ham, boil the eggs for 8 minutes and leave to cool. Cut in half lengthwise with a knife and carefully scoop out the yolks with a coffee spoon.
Chop the ham very finely (works best with a food processor). Mash the yolks with a fork and mix well with the ham, butter and crème fraîche.
Add some chopped chives and season with salt and pepper. Put the mixture into a piping bag and fill the egg shells with it.
Sprinkle the stuffed eggs with ham with fresh chives.