Wash and peel your potatoes.
Cut them into quarters so that there are two flat sides and one round side to the potato.
Preheat your cast iron pan in the oven at 425F. You may also use a large metal baking dish.
Boil a pot of water with salt and baking soda.
Boil your potatoes for 10 minutes then drain to cool. They should have soft and slightly mushy edges but don't fall apart.
Once the pan has been preheated, coat the entire bottom of it with a neutral oil. (I used avocado oil)
Lay one of the two flat sides of the potato on the pan then place in the oven for 15 minutes.
Flip the potatoes onto the other flat side to cook for an additional 10-15 minutes. You'll know its ready when both sides are beautifully golden brown.
Mix together the olive oil, garlic, and rosemary.
Stir potatoes in the olive oil mixture while still in the hot pan. This will create an aroma in your house that will have everyone running down hungry.
Toss potatoes in a bowl with salt then enjoy!