How can I make tonkotsu ramen broth at home?

To make tonkotsu ramen broth at home, simmer pork bones for several hours with aromatics like garlic, ginger, and green onions. Skim off any impurities that rise to the surface. Strain the broth and season with soy sauce and salt. Serve with ramen noodles, sliced pork, soft-boiled egg, and toppings of your choice.