Step 1

Place potatoes in large pot. Cover with water by 1". Boil slowly until fork tender. Drain and cool potatoes. Refrigerate them overnight or for several hours.

Step 2

Preheat oven to 400 degrees Fahrenheit. With the back of an offset spatula smash each potato and place into a greased cast iron skillet or onto a greased cookie sheet. Drizzle generously with avocado oil and sprinkle with sea salt. (Use your fingers to rub the top of each potato with the oil.)

Step 3

Bake 15 minutes, then flip each potato and bake 15 additional minutes. Serve.