Tonkotsu ramen is a rich and creamy dish that is made with pork bones. To make this dish, you will need ramen noodles, pork bones, chicken broth, garlic, ginger, soy sauce, mirin, sake, and green onions. Start by boiling the pork bones for several hours until the broth becomes thick and creamy. In a separate pot, combine the chicken broth, garlic, ginger, soy sauce, mirin, and sake. Bring the mixture to a boil and then reduce the heat to a simmer. Add the cooked noodles to the broth and top with sliced green onions. Pour the thick and creamy tonkotsu broth over the noodles and enjoy!