Scrub, peel, and cut the medium potatoes into one-inch cubes.
Place the potato cubes into a large pot and cover them with water. Boil the potatoes over medium-high heat for approximately 10 minutes until they are firm-tender.
Drain the cooked potatoes and set them aside to cool in a large mixing bowl.
Chop the sweet onion and celery, then add these to the cooled potatoes.
Hard-boil the eggs, then cool and peel them. Either push the eggs through a cooling rack over the potato mixture or chop them and add them directly.
Pour the white distilled vinegar over the potato mixture.
In a separate bowl, mix the mayonnaise, yellow mustard, pickle relish, salt, and pepper to create the dressing.
Fold the dressing into the potato mixture gently.
Garnish with paprika and sliced spring onions.
Refrigerate until served.