In your pot, combine wild rice blend, and chicken broth. Heat until boiling and then reduce heat to simmer for 10-15 minutes (until rice is tender)
Meanwhile in your frying pan, add 2 tablespoons of butter and cook the celery, onion, and carrots until tender. Once they are tender, throw in the chopped mushrooms.
Next, add the remaining butter and add flour, mix well and cook for about 2-3 minutes.
Add the veggies to the rice and broth after it has been simmering for at least 10 minutes. Mix well, the soup will start to thicken.
Once it has thickened, add the half and half and remaining seasonings.
When the cream is fully incorporated, it's ready to serve! Serve with a warm slice of sourdough with butter if desired!