Boil eggs until hard-boiled.
Peel the eggs, cut them in half, and remove the 4 Egg Yolks.
Mash the yolks in a bowl and add 1 tbsp Mayonnaise, 1 tsp Mustard, salt, Pepper, and ½ tsp Lemon Juice. Mix until smooth.
Spoon or pipe the mixture back into the egg whites.