Most home cooks have been taught to cook a baked potato wrapped in foil, but this step is not necessary. If you enjoy baked potatoes from your favorite steakhouse restaurants, you will recall they have a crispy skin with a soft fluffy inside.
What happens if you don't wrap potatoes in foil?
Wrapping potatoes in foil does not hasten baking. On the contrary, since the foil itself has to be heated before the potato begins to bake, cooking times increase slightly. Not only do you get better baked potatoes when you bake them unwrapped, you also save money.
Is it better to bake potatoes covered or uncovered?
Some say wrapping baked potatoes in aluminum foil helps them cook faster (aluminum conducts heat, then traps it), and it does keep them hot for longer once they come out of the oven, which is why we think restaurants use this method. Wrapping potatoes will also give you a softer, steamed skin, if that's what you like.
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