Preheat the oven to 180°C/350°F
In a small bowl or a jar, add all the SAUCE ingredients, and mix well to combine.
Mix together DRY RUB ingredients and rub it generously all over the pork tenderloins and massage it with your fingers to ensure it covers the meat.
Heat the oil in a large oven-proof skillet (such as a cast-iron skillet) over high heat. Add the pork tenderloin and let sear for 3-4 minutes, turning the meat to brown on all sides.
When the pork is browned, push it to the side, add the garlic, and cook it until golden brown.
Pour the sauce to the skillet. Turn and coat the pork with the sauce. Transfer to the oven.
Roast for 13 to 18 minutes or until the internal temperature is 68°C/155°F for well done or 65°C/149°F for medium. (See tips about temperatura and timing on the blog.)
Remove the pork tenderloins from the skillet and place it on a plate. Cover loosely with aluminum foil, and let it rest for about 5-10 min.
Place the skillet with the sauce on the stove over medium heat, and cook briefly for 3 minutes until the liquid reduces to a thin syrup.
Remove sauce from heat, add pork, and turn to coat in sauce.
Before serving, cut it into thick slices. Pour the rest of the sauce over the pork slices.