Tomato Quinoa Soup

(1 qt. vegetable broth, 2 cloves crushed garlic, 4 slices ginger, 1 lb. sliced bok choy, 1 cup sliced button mushrooms, 1 large chopped heirloom tomato, 2 cups cooked quinoa, 2 sliced scallions). In a medium pot over medium heat, combine all ingredients; simmer for 30 minutes.