Preheat your oven to 425°F (220°C).
Wash the russet potatoes thoroughly under cold water.
Dry the potatoes with a clean towel.
Prick each potato several times with a fork to allow steam to escape.
Rub each potato with olive oil to coat evenly.
Sprinkle sea salt over the potatoes for added flavor.
Place the potatoes directly on the oven rack for even cooking.
Bake for 45-60 minutes, or until the skin is crispy and a fork easily pierces the flesh.
Remove the potatoes from the oven and let them cool slightly.
Cut a slit in the top of each potato and squeeze the ends to open them up.