This delicious pork loin roast starts with a simple herb and spice rub and is then slow cooked to perfection with a tangy sauce mixture. The sauce is thickened and served with the pork. Serve the roast with mashed or boiled potatoes for a fabulous meal. It's also perfect alongside rice or noodles. The pork roast is done after about 3 hours on high or about 6 to 8 hours on low. To avoid overcooking the pork, check the temperature with an instant-read thermometer. If overcooked, the pork can become dry and could be difficult to slice. Additionally, you can skip the searing step, but the caramelization adds an excellent flavor.