Pork tenderloin makes an elegant entrée for a small dinner party but also can be roasted or grilled whole for quick weeknight dinner. When sliced crosswise (like a loaf of French bread), the resulting medallions also may be sautéed. Pork tenderloin has a mild flavor, so it’s best when prepared with an added spice rub, marinade, stuffing or flavorful sauce. To keep the tenderloin juicy, be careful not to overcook it.