Pork tenderloin is a verstile and simple dish to prepare, and because there is very little fat and no bone, it's also a well priced cut of meat.
Preheat oven to 375 degrees. Remove pork tenderloin from wrapper.
Place meat in 9-by-13 baking dish. In small bowl, combine olive oil, balsamic vinegar or wine and spices. Stir well with fork to mix.
Pour olive oil mixture over meat, flipping once or twice to make sure all sides are evenly coated.
Place uncovered in preheated oven and cook for 45 minutes.
Remove from oven, tent with aluminium foil, and let rest for 10 to 15 minutes. Carve on the diagonal and serve with rice, applesauce and steamed zucchini.