For our cottage fries.Thinly slice the potatoes on a mandolin then soaked them for four hours in water to remove some of the starch.
Remove the tomahawk steak from the fridge at least an hour before cooking. Season the steak liberally with 2 ½ teaspoons salt.
Set the smoker/grill to 250 F. Add the steak to the grill and cook for 90 minutes until it reaches 120 degrees F. When it reaches temp, remove the steak from the grill. Increase the grill to high/500 F and sear the steak for 2 minutes on each side. Transfer steak onto a cutting board and rest 30 minutes. While the steak rests, prep the cottage fries.
Fill a dutch oven with 4 cups neutral oil, and bring to 300 degrees F. For the first fry we cooked them for about 5-6 minutes. This cooked the potato all the way through. Remove the potatoes from the oil and turn the heat up to For the second fry, we dunked them into 350º oil to get them golden brown and crispy.