1. Preheat oven to 450° F.
2. In a small bowl, combine the garlic, thyme, salt, and pepper to create a coarse paste. Rub the paste all over the roast. Let sit 1 hour at room temperature.
3. Place the roast on a rack of a roasting pan bones faced down. Pour stock into bottom of pan and place in 450° F oven for 15 minutes.
4. After 15 minutes, turn the oven down to 350° F. DO NOT OPEN DOOR. Continue to cook the roast about another 1 hour and 45 minutes, then check the internal temperature. It should be 115-120º F deep in the center of the roast. If not, return the roast to the oven and continue roasting, checking every 15 minutes until your reach temperature.
5. Remove roast from pan and place on a platter; tent loosely with foil and let rest at least 30 minutes.
6. Pour the pan drippings from the roasting pan into a fat separator. Pour de-fatted drippings into a gravy boat to serve with the roast, retaining the fat in the separator for use in preparation of the Yorkshire pudding.
7. To carve the roast set it on its side. Using a knife, cut along the bones to separate them from the meat. Slice in between the ribs; place the ribs on the platter. Place the meat fat side up on the cutting board and slice into slices, Place the slices on the platter and serve with au jus (dripping), whipped horseradish cream and Yorkshire pudding.
Horseradish Cream
1. In a bowl with a whisk attachment, beat the heavy cream until soft peaks are formed. Fold in 4 tablespoons of horseradish. Give it a taste; if you want it spicier, add an additional tablespoon at a time until desired spiciness is achieve.
TIPS & TRICKS
• If you can rub the paste all over the roast 1-4 days before cooking and place on a rack uncovered in your fridge, it will improve the flavor of the meat and also develop a more beautiful crusty brown exterior.
• By cooking the roast to 115-120° F in the oven and then letting it rest, the internal temperature will continue to rise. We call this “carry over cooking”. It will bring the internal temperature to 125-130° F which will give you a rare center and a mostly medium rare roast. If you want it a little more done, cook it to 125-130° F in the oven, which will give you a more medium roast.