Drop potatoes in boiling water covered by 3 to 4 inches. Remove before they are thoroughly cooked (about 15 to 20 minutes). Cool potatoes and then peel. And cut into pieces 2 inches long and 1/2 inch thick.
Heat oil to 375°F
Put the potatoes in oil a few at a time and cook until light and brown; remove and drain well. Sprinkle with salt and sugar.