Wash and scrub the potatoes thoroughly. Cut off any discolored spots. Cut into large wedges. Pat dry or let air dry, then toss with olive oil and seasonings.

For the onion sour cream dip, mix all the ingredients together until well combined. If you don't have some ingredients, you can substitute with regular mustard, fresh minced garlic, or finely chopped fresh onion. Let the dip chill for a while to let the flavors develop. You can also use Greek yogurt instead of sour cream if you prefer.

Sprinkle the potato wedges with dried parsley and serve with the onion sour cream dip.