Begin by dicing the cooked ham into small, bite-sized pieces.
Chop the celery, red bell pepper, and red onion into uniform pieces for even distribution.
In a small bowl, whisk together the mayonnaise, Dijon mustard, apple cider vinegar, salt, and pepper to create the dressing.
Mixing The Ingredients
In a large mixing bowl, combine the diced ham, chopped celery, red bell pepper, and red onion.
After the dressing has been made, pour it over the ingredients and gently stir so everything is coated.
Taste and adjust seasoning if necessary, adding more salt and pepper as desired.
Letting The Flavors Meld
Allow the salad to chill in the refrigerator for at least 30 minutes to an hour before serving. This will give the flavors time to meld together and develop.