Wash and thinly slice the radish.
Cut the beef into bite-sized pieces.
Add sesame oil to a pot and stir-fry the beef.
When the beef is about halfway cooked, add the radish and continue stir-frying together.
Pour in water and bring to a boil.
Season with soy sauce for soup and salt.
Add green onion and minced garlic, and let it simmer a bit more.