How can I cook a pork sirloin roast to perfection?

To cook a pork sirloin roast to perfection, preheat your oven to 350F. Season the roast with salt, pepper, and any other desired herbs or spices. Place the roast in a roasting pan and cook for about 20 minutes per pound, or until the internal temperature reaches 145F. Let the roast rest for 10-15 minutes before slicing and serving.