Preheat oven to 450˚F. Place potatoes in a bowl of cold water and let them stand for ½ hour. Drain and dry well.
Add potatoes back to the bowl (dry it well also) toss with oil, sea salt and pepper.
Line baking sheet with parchment paper and arrange the potatoes on the pan, bake at 450˚F for 30-35 min until the potatoes are cooked through, browned and crispy.