American
Put the eggs in a pan, cover them with cold water and bring to a boil.
Simmer for 10 minutes, then move the eggs to a bowl of iced water for 5 minutes.
Peel the eggs, halve them lengthwise and tip the yolks into a bowl.
Mash the yolks finely with a fork, then mix in the mayonnaise, mustard, vinegar, salt and pepper until smooth.
Spoon or pipe the filling back into the egg whites.
Dust with paprika and chill for 30 minutes before serving.