How can I properly boil oxtail to ensure it is tender and flavorful?

To properly boil oxtail for tenderness and flavor, first sear the oxtail in a hot pan to enhance its flavor. Then, place the oxtail in a pot with enough water to cover it, along with aromatics like onions, garlic, and herbs. Bring the water to a boil, then reduce the heat to a simmer and cook the oxtail for 2-3 hours until it is tender. Season with salt and pepper to taste.