Recipes: Chinese oxtail soup

Preparation:  Preparation time: 20 min Cooking time: 1 hrs 30 min Serving: 6 Ingredients: ●     2 kg (4 to 5 lbs) oxtail, separated at joints ●     8 cups beef stock (or water) (*Footnote 1) ●     2 tablespoons olive oil ●     1 big onion, coarsely chopped ●     4 carrots, chopped ●    ...