Creamy Potato Salad

lbs russet potatoes (, peeled, rinsed and diced into 1-inch chunks)

salt (, then to taste)

eggs hard boiled (, peeled and diced)

finely chopped red onion (, rinsed under cool water and drained)

chopped celery

chopped baby dill pickles

chopped fresh parsley ((optional))

light mayonnaise

sour cream

apple cider vinegar

prepared yellow mustard

freshly ground black pepper (, or more to taste)

celery seed

milk (, then more as desired)