Peel the potatoes, and dice into small pieces.
Add the potatoes to a large pot filled halfway with water and boil for about 10 minutes, until potatoes are tender.
Drain into a colander in the sink and run under cold water to cool. Dump into a large bowl.
Prepare your hard boiled egg with whichever method you prefer. I like to boil for 10 minutes then cover for 10, then run under cold water, then peel.
Slice the hard boiled eggs in half, adding the cooked yolks to a medium bowl, and the cooked egg whites to a cutting board.
Use a fork to mash the yolks into a fine powder, then add mayonnaise and mustard. Stir until well combined, then pour over the potatoes, along with the pepper, and toss to combine.
Chop the egg whites into small pieces.
Fold the egg white and bacon pieces into the creamy potatoes.
Chill for 2 hours. Stir before serving.