Bought a Rib Roast - now what?

[wwt]

Just bought a 71/2 pd Angus rib roast at Randalls. Now, how should I cook it?
The butcher trimmed the back side and tied it for me.

I read the previous thread but there's no info there.

 

[CanaTigers]

I rub the roast with a mixture of kosher salt, crushed garlic and cracked black pepper. Coat it pretty heavy and let sit in the fridge for about 3 hours or overnight. Then put in the oven preheated to 500f. Close the door and turn the oven off. Don't open or check for 5 or 6 hours for medium rare. After you take it out let it cool for a bit then scrape off the excess salt and slice.

 

[MirrOlure]

Obviously a little late to the game here, but next time (and for that matter, any time you are in a quandry), you can always ask WWABD? (What Would Alton Brown Do?)