Place the eggs in a single layer in a medium saucepan and cover them with water by at least one inch. Bring the water to a full boil over medium high heat. Once boiling, cover the pan and remove it from the heat. Let the eggs sit in the hot water for about 12 minutes. Immediately transfer the eggs to a large bowl filled with ice water and let them cool completely for at least 10 minutes to ensure they are easy to peel.
Gently crack the eggshells and peel them under cool running water. Pat the eggs dry with a paper towel. Use a sharp knife to slice each egg in half lengthwise. Carefully remove the yolks and place them into a small mixing bowl, then set the whites aside on a serving platter or an egg tray.
Use a fork to mash the egg yolks until they are fine and crumbly. Add the mayonnaise, Dijon mustard, apple cider vinegar, salt, and black pepper to the bowl. Stir everything together until the mixture is completely smooth and creamy. You can also use a small hand mixer or a food processor if you want an extra silky texture.
Spoon the yolk mixture back into the centers of the egg whites. For a more professional and festive look, you can transfer the filling to a piping bag fitted with a large star tip and pipe the mixture into the whites in a swirling motion. This makes the Festive Deviled Eggs look much more elegant for your Christmas celebration.
Lightly dust the tops of the eggs with smoked paprika. Place one or two pomegranate seeds on top of each egg to mimic holly berries, and tuck a tiny sprig of parsley next to the seeds to act as the leaves. Sprinkle the finely chopped chives over the entire platter for a final touch of green before serving.
