Wash the bean sprouts and radish thoroughly, then slice the radish thinly.
Pour water into a pot and add the radish. Bring to a boil over medium heat.
When the radish is halfway cooked, add the bean sprouts.
Season with minced garlic, soy sauce for soup, and salt.
When the bean sprouts are cooked, add green onion and boil once more briefly, then turn off the heat.