Carefully remove the egg shells under a stream of cool water.
Set the boiled and peeled eggs aside.
Cut the hard boiled eggs in half, then remove the cooked yolks to a mixing bowl.
Add the mayonnaise.
1 tbsp mayonnaise
Add the kosher salt, white pepper, mustard powder, and vinegar to the mixing bowl.
1 tsp white vinegar, 1/4 tsp white pepper, 1/2 tsp kosher salt, 1/2 tsp mustard powder
Use the back of a spoon, or a fork to gently mash the yolk mixture together until it is well incorporated. It should be a little bit grainy, and not overly smooth. Taste and adjust seasonings if necessary. If the mixture is too thick, add white vinegar a little at a time until you achieve the desired consistency.
Add a spoonful of yolk mixture to each boiled egg half.
Sprinkle with paprika, chopped dill, and chopped parsley.