Take the prime rib out of the package and slice off the bones completely, then tie the roast with butcher twine and snake rosemary underneath the twine.
Cover the roast in kosher salt and place it in the fridge uncovered on a rack for at least overnight, ideally for two to three days.
Take the roast out of the fridge and let it sit to take the chill off. Spray it with Wagyu beef tallow and coat it with Uncle Steve's Lucky Shake.
Set the Ninja Woodfire Grill to the smoker setting at 275°F. Cook until the internal temperature reaches 125°F, about a couple of hours, checking periodically.
Once the roast reaches 125°F, remove it from the grill, cover it with tin foil, and let it rest for about half an hour to allow the juices to reabsorb.
After resting, remove the twine and rosemary, slice the roast, and serve.