The recipe that MIA wrote truly works. I've used it several times. We go to the Maine seacoast several times a year (2 hr drive) and get his New Years Eve dinner. Can't beat buying them off the boat. If you have all the fixin's with you,(butter, something to melt it with, crackers, etc.) you can eat them right there on the pier. Mouth watering thinking about it. And there's 4 inches of snow on the ground outside :-(
Cut slits different depths and insert peeled garlic ( Alot is better )
Smear whole prime rib with Grey Poupon Dijon mustard
Coat with kosher salt, as thick as will stick
Pre heat oven to 500, put roast in an open roaster with a rack cook at 500 for 4 min a pound
Turn oven to 275 - 300 depending on how quickly you want to eat, check with insta read therm and pull about 145, salt cap will break off in large chunks
Have never served without it being everyones new favorite
Not a rock salt recipe, but here goes. Take extra virgin olive oil garlic and rosemary put in a blender and chop. Rub the rib in the early morning and leave out until cooking time. Get the grill and rotisserie ready at about 150-200 degrees. Cook until done enough by the thermometer.
For got to add if your rib has the tail, slice it back about 2 -3 inches and rub the mixture inside and string it back together. I also add some pecan wood for a light smoke flavor and serve rare to med rare.