Boil about 6 cups salted water in pot that will hold 18 eggs (they can be on top of each other)
Add eggs (carefully) when water is boiling - I use a large wok strainer to make it easier
When water reaches boiling again - reduce to medium - set timer for 13 minutes
While eggs are boiling - prepare a large bowl of Ice Water
Place eggs in ice bath for 5 minutes , Peel - cut in half
Separate yolks in large mixing bowl and set up whites on platter or plate
Add mayo, dijon mustard and salt & pepper to taste. Be very careful with salt! Little at a time.
Blend together with fork - add more mayonnaise for desired consistency. It will thicken as it rests so loose is okay
This can be made a day ahead of time as long as it is covered very well with plastic wrap.
This has been a family favorite for my kids. I would make this as a snack for when they got home from school so it would be the first thing they grabbed to eat before other sweet choices.