Step 1

Start a large saucepan with the sesame oil at medium-high heat, and once heated, add the onion, garlic, carrot, celery, and ginger and sauté until veggies begin to caramelize.

Step 2

Pour in the chicken broth, beef broth, and water and bring to a boil, then reduce heat to a strong simmer.

Step 3

Simmer uncovered for about an hour, then remove from heat and strain the vegetables out with a fine-mesh sieve.

Step 4

Portion out servings and place the sliced mushrooms and green onion on top.