Tonkotsu ramen is a popular Japanese dish that originated in Fukuoka, Japan. It is made with a rich and creamy pork bone broth that is simmered for hours to extract all the flavors and nutrients from the bones. The broth is then seasoned with soy sauce, miso, or salt and served with thin noodles, slices of tender pork, and various toppings such as green onions, bamboo shoots, and nori seaweed. Tonkotsu ramen is a hearty and satisfying meal that is perfect for cold winter days.