Set Skillet to 420ºF, add water and salt and bring to a boil.
Place in potatoes and let boil for 10 minutes or until fork tender.
Unplug Skillet and drain potatoes.
While potatoes are still warm, place potatoes one at a time on a cutting board and firmly mash down so the potato is flattened. Sprinkle sea salt on both sides of potato.
Plug in Skillet, set to 400ºF and add oil or butter.
Place each potato in the Skillet with a spatula and brown on both sides.
