Oxtail stew

Name: Oxtail stew
Cook time: 3 h 30 min
Total time: 3 h 30 min
Cuisine: British
Ingredients: 2 tbsp plain flour; 2 (about 3kg) oxtail jointed and cut into pieces; 4 tbsp sunflower oil for frying; 2 onions chopped; 3 carrots cut into small chunks; 2 celery sticks, cut into small chunks; 2 garlic cloves chopped; 2 tbsp tomato purée; bay leaves and thyme sprigs, tied together; 1 bottle full-bodied red wine; 1 beef stock cube; 300g self-raising flour; bunch basil leaves, removed; 75g butter; 3 egg whites; olive oil for drizzling