Ingredients: 12 hard-boiled eggs, halved lengthwise 1/3 cup mayonnaise 2 tblsp. prepared horseradish 2 tsp. champagne vinegar (or white wine vinegar) 2 tsp. Dijon mustard Chopped chives and paprika for garnish (optional) Kosher salt to taste Preparation: Mash egg yolks with mayonnaise, horseradish, vinegar, and mustard in a medium bowl until smooth. Season with salt and spoon back into egg whites. Sprinkle with paprika and chives if desired.