To make a pork loin roast, preheat the oven, cover the roasting pan with foil and make a garlic rub. Cover the pork loin with the rub and roast the pork in the oven. Pour leftover pan juices over the pork before serving.
Prepare the pork rub
Preheat the oven to 400 degrees Fahrenheit. In a bowl, mix 4 large pressed garlic cloves, 2 teaspoons of dried rosemary, 4 teaspoons of fresh, chopped rosemary, 1/2 teaspoon of ground black pepper and 1 1/2 teaspoons of coarse salt.
Cover the pork in the garlic mixture
Rub the garlic mixture onto the pork, making sure to get the sides and ends. Cover a roasting pan with foil and place the pork loin, fat side down.
Roast the pork
Place the pork in the preheated oven and roast for 30 minutes. Turn the pork fat side up and continue roasting for 25 minutes longer. Your thermometer should register 155 degrees Fahrenheit when inserted into the center of the pork. This indicates that the pork is ready.
Let the pork stand
Remove the roast from the oven once it is ready and let it stand for 10 minutes. Pour the leftover juices into a small saucepan and keep warm over low heat.
Slice the pork
Slice the pork crosswise, with each slice about 1/3 inch in thickness. Place the pork slices on a platter and pour the pan juices over the slices.