Preheat the oven to 450°F (yes, that is the correct temperature.)
Chop 4 cloves garlic, ¼ cup fresh parsley leaves, 2 teaspoons fresh thyme leaves and 1 teaspoon fresh rosemary leaves together until it is very fine on a cutting board. Add to a small bowl. Stir the herbs with 3 Tablespoons olive oil, 3/4 teaspoon salt and 1/2 teaspoon black pepper and set aside.
Pat a 3 pound boneless pork loin roast dry with a paper towel and place it in a baking dish.
Optional: poke holes all over the roast with a pairing knife; this will help the herbs penetrate the meat.
Rub the herb mixture all over the roast, and place the roast fat side up.
Place in the oven (on the middle rack) for 15 minutes, then lower the heat to 350°F and continue to cook until the internal temperature reaches 145°F.
Take out of the oven and cover with foil, allow to rest for 10 minutes.
Mix½ cup beef stock with 2 Tablespoons cornstarch and set aside.
Add the remaining cup of beef stock and pan drippings to a sauce pot and bring to a simmer.
While whisking constantly, slowly stream in the cornstarch mixture into the pot until combined. Allow to simmer for an additional 5 minutes until thicken.
Slice the roast and serve with the gravy.
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.