Tonkotsu ramen is a rich and creamy dish that is made with pork bones. The broth is typically simmered for hours to extract the flavor from the bones. The noodles are usually thin and curly, and the dish is often topped with sliced pork, green onions, and bamboo shoots. To make this dish, start by making the broth and then cook the noodles separately. Once the noodles are cooked, add them to the broth and top with your desired toppings.