Mash the eggs in bowl adding mayonnaise, mustard, salt, pepper and yellow color. Set aside.In a green paste added shredded cucumbers with green food color and set aside.
In ketchup/chili garlic sauce add shredded carrots and red food color and set aside.
Assembling:
Take four slices and butter them properly.
Now add red batter and place a slice on it following by green and lastly by yellow.