Chop the celery and yellow onion into small, even pieces and set aside.

Dice the cooked ham into small chunks and pulse in a food processor until finely chopped.

In a large mixing bowl, combine the chopped celery, onion, and processed ham. Add the mayonnaise, sweet pickle relish, yellow mustard, and dill.

Mix gently using a spatula until ingredients are just combined. Taste and adjust seasoning with black pepper and pickle juice if necessary.

Transfer the Easy Ham Salad to an airtight container and refrigerate for up to 3-4 days.