Rinse wild rice in a strainer under cold water about 1 minute. In a large saucepan combine wild rice, the 2-1/2 cups water, brown rice, bouillon granules, and sage or nutmeg. Bring to boiling; reduce heat. Cover and simmer 20 minutes.
Stir in mushrooms, celery, and green onion. Cook, covered, over medium-low heat for 25 minutes or until vegetables are just tender, stirring frequently. Garnish with toasted almonds, if desired. Serve immediately. Makes 8 to 10 servings.