Preheat oven to 375ºF / Gas Mark 5. While oven heats, scrub potatoes under cold water, dry with a towel and pierce a few times on each side with a fork. Place potatoes on a microwavable plate and microwave for 6 minutes, turning halfway through the process.
Brush potatoes with olive oil and sprinkle with coarse salt, pressing it gingerly against the potatoes (be careful, they are already hot). Bake on an open oven rack, with a lined baking sheet on a rack below (we like using our nonstick Cookina baking sheet liners, but foil or parchment will also work); the potatoes will drip just a little oil or moisture from the pierced potato itself, and you don’t want this to burn onto the oven floor.
Bake potatoes for 25 to 30 minutes, until they pierce easily with a sharp knife and the skins are crisp. Serve with your favorite potato toppings.
