Vinegar and salt potato wedges

I served these with the ham and cheese croissants
Small red potatoes or Yukon gold.  The amount depends on how many you plan to feed. Wash and leave skins on.  Cut into wedges.  Place in a bowl and toss with olive oil and salt and pepper. Spread in a baking sheet in a single layer.  Bake at 400 degrees for 20 minutes.  Remove from oven and sprinkle with red wine vinegar or malt vinegar. Return to oven for 10 more minutes.  Sprinkle with additional salt if desired.