Preheat your oven to 450 degrees. Place a rack on the second highest setting. Put your cast iron skillet in the oven while it preheats.
In a mixing bowl, add the spices, oils, potatoes, and garlic. Stir to combine.
When the oven is hot, carefully remove the skillet and drizzle a little avocado oil on the pan. Swirl to coat the bottom. Add the spuds, give them a stir, and then put them in the oven for 11 minutes.
After 11 minutes, give them a stir and put them back in for another 15-30 depending on how crispy you prefer them. You can also blast them with a broiler for the last minute or two to get them really crispy!
Cut the potatoes and cover with water in the fridge up to two days before making these home fries. Simply drain the water and add the remaining ingredients.You can use olive oil in place of the avocado oil, but it technically isn't meant to be used at high heat.