2. Heat the vegetable oil in a large pot over medium-high heat. Brown the oxtail pieces on all sides.
3. Remove the oxtail and set aside. In the same pot, add the chopped onion and minced garlic. Sauté until softened.
4. Add the tomato paste, thyme, and allspice. Cook for another 2 minutes.
5. Return the oxtail to the pot. Add the beef broth, carrots, and potatoes. Bring to a boil, then reduce heat to low and simmer for 2.5 to 3 hours, until the oxtail is tender.
6. Adjust seasoning with salt and pepper to taste. Serve hot.
Notes:
This stew is even better the next day. Store leftovers in the fridge and reheat before serving.