01 -
Carefully tap and crack the shells of hard-boiled eggs with the convex side of a spoon or by rolling gently on a countertop, leaving shells in place.
02 -
In a container, add enough water to submerge the eggs, incorporate food coloring, and stir to combine.
03 -
Place cracked eggs into the colored water mixture, ensuring eggs are completely covered. Add a splash of white vinegar. Cover container with a lid or plastic wrap.
04 -
Refrigerate eggs in the coloring bath for a minimum of 3 hours or up to overnight for deeper color saturation.
05 -
Remove eggs from coloring solution. Rinse briefly under cool water with an additional splash of white vinegar to help set the pigment, then gently peel off shells.
06 -
Slice peeled eggs lengthwise. Remove yolks and place them in a separate mixing bowl.
07 -
Combine egg yolks with mayonnaise, mustard, apple cider vinegar, salt, pepper, and optional food coloring. Mash and mix until creamy and uniform.
08 -
Fill each egg white half with prepared yolk mixture using a spoon or piping bag.
09 -
Garnish filled eggs with paprika, chia seeds, or parsley if desired. Serve chilled.