Bring the broth to a gentle simmer over medium heat in a large pot, keeping it below a boil so the soup stays clear.
6 cups beef or vegetable broth
Stir in the soy sauce, sesame oil, garlic, and ginger, and let everything warm together until fragrant.
1 tablespoon soy sauce, 1 teaspoon sesame oil, 1 garlic clove, 1 teaspoon fresh ginger
Add the onion, carrot, celery, and mushrooms, then simmer uncovered for 15 to 20 minutes until the vegetables are tender and the broth is flavorful.
½ small onion, 1 carrot, 1 celery stalk, Mushrooms
Skim any foam from the surface to keep the soup light and clear.
Ladle into bowls, garnish with green onions, and serve hot.
2-3 green onions
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