To keep the spirit of the dish, any variation should remain simple and inexpensive. For extra tang, swap part of the white vinegar for apple cider vinegar. If you like a slightly looser, silkier dressing, thin the mayonnaise with a splash more cold water or milk.
A spoonful of yellow mustard can be whisked into the dressing for a brighter, old-school picnic flavor without changing the overall character. If you have them on hand, a small amount of finely diced onion or a sprinkle of dried herbs (like parsley or dill) can add depth, but use a light hand so the salad stays focused on the creamy pasta and crunchy celery.
For a bit more protein while staying budget-conscious, stir in a chopped hard-boiled egg or some drained canned tuna—both were common ways to stretch simple dishes in lean times. Food safety tips:
