Perfectly Juice Prime Rib

This is my "tradmark" Christmas Eve Dinner. DH won't even order prime rib in a restaurant anymore, because he prefers mine. Its a super easy recipe, great for dinner parties, but DO NOT alter cooking times or directions. And DO NOT carve until just before serving. Here NEEDS a clarification!!! The salt is only intended to produce a shell to keep the moisture in. It's not intended to be consumed unless of course you like extremely salty foods. AFTER the roast has rested for 15 mins. Lightly scrape the salt away but not so much that you remove all the seasonings