Heat 2 tablespoons olive oil in a large heavy skillet over high heat. Saute pork until evenly browned, and fully cooked. Transfer to a bowl, and sprinkle with cilantro and garlic; keep warm.
In a small bowl, combine 3 tablespoons olive oil, vinegar and port. Season with salt, black pepper, and cayenne. Whisk until consistency is creamy. Stir into cooked pork, and serve immediately.