Chop the scallions, then the beef into bitesize pieces while removing the fat and silver skins, and the radish into thin cubes.
Soak the beef in water for 30 minutes or parboil it for 2-3 minutes. Drain and rinse afterwards.
Place pot on high heat, fill it with water and add in the beef, radish, and dashi pack. Let this boil for 20 minutes.
Remove the dashi pack once flavor is infused, and scoop out the impurities that came up on the surface of the soup.
Lower heat to medium and season the soup with garlic, soup soy sauce, fish sauce, salt, and pepper. Let the soup boil for 10 minutes.
Finish the soup with scallions, then serve hot, and enjoy!