Oxtail Soup with Daikon and Ramen Noodles

Name: Oxtail Soup with Daikon and Ramen Noodles
Ingredients: 3 tablespoons vegetable oil; 5 pounds large, meaty oxtails, cut 2 inches thick; Salt; Freshly ground black pepper; 1 cup coarsely chopped fresh ginger (about 4 ounces); 1 cup coarsely chopped garlic (from about 2 large heads); 1/4 cup sake; 2 quarts beef stock or low-sodium broth; 1 large daikon (1 pound), peeled and cut into 3/4-inch-thick rounds; 1 large leek, white and pale green parts only, cut into 1-inch rounds; 1 pound dried ramen or soba noodles; 1/2 cup Golden Garlic Chips and 1/2 cup chopped chives, for serving